diff --git a/src/chemistry/EAGLE/chemistry.h b/src/chemistry/EAGLE/chemistry.h
index 8b007b40fa858237fc589af0f11e6ada6af0d1cf..96a645806a495801f6165353cad9e1c87087f8e3 100644
--- a/src/chemistry/EAGLE/chemistry.h
+++ b/src/chemistry/EAGLE/chemistry.h
@@ -124,9 +124,10 @@ __attribute__((always_inline)) INLINE static void chemistry_first_init_part(
  * @param phys_const The physical constants in internal units.
  * @param data The properties to initialise.
  */
-static INLINE void chemistry_init_backend(
-    struct swift_params* parameter_file, const struct unit_system* us,
-    const struct phys_const* phys_const, struct chemistry_global_data* data) {
+static INLINE void chemistry_init_backend(struct swift_params* parameter_file,
+                                          const struct unit_system* us,
+                                          const struct phys_const* phys_const,
+                                          struct chemistry_global_data* data) {
 
   /* Read the total metallicity */
   data->initial_metal_mass_fraction_total =
diff --git a/src/chemistry/GEAR/chemistry.h b/src/chemistry/GEAR/chemistry.h
index abed5b913683fe72c5c1f197e5506b14100a0ab5..6212ed1efb423717b800d431a83f0e8bec7c6c6f 100644
--- a/src/chemistry/GEAR/chemistry.h
+++ b/src/chemistry/GEAR/chemistry.h
@@ -72,9 +72,10 @@ static INLINE void chemistry_print_backend(
  * @param phys_const The physical constants in internal units.
  * @param data The properties to initialise.
  */
-static INLINE void chemistry_init_backend(
-    struct swift_params* parameter_file, const struct unit_system* us,
-    const struct phys_const* phys_const, struct chemistry_global_data* data) {
+static INLINE void chemistry_init_backend(struct swift_params* parameter_file,
+                                          const struct unit_system* us,
+                                          const struct phys_const* phys_const,
+                                          struct chemistry_global_data* data) {
 
   /* read parameters */
   data->initial_metallicity = parser_get_opt_param_float(
diff --git a/src/chemistry/none/chemistry.h b/src/chemistry/none/chemistry.h
index 2114b1c85f161e309ddfb4304df2ce23506d041a..dce06ffda339e8a6c4925c7b7c430485a208adb7 100644
--- a/src/chemistry/none/chemistry.h
+++ b/src/chemistry/none/chemistry.h
@@ -59,9 +59,10 @@ chemistry_get_element_name(enum chemistry_element elem) {
  * @param phys_const The physical constants in internal units.
  * @param data The global chemistry information (to be filled).
  */
-static INLINE void chemistry_init_backend(
-    struct swift_params* parameter_file, const struct unit_system* us,
-    const struct phys_const* phys_const, struct chemistry_global_data* data) {}
+static INLINE void chemistry_init_backend(struct swift_params* parameter_file,
+                                          const struct unit_system* us,
+                                          const struct phys_const* phys_const,
+                                          struct chemistry_global_data* data) {}
 
 /**
  * @brief Prints the properties of the chemistry model to stdout.
diff --git a/src/cooling/EAGLE/cooling.h b/src/cooling/EAGLE/cooling.h
index 6227dd24267f2d1789ada94a9ac686c65ebaf380..f059d995c65cf791f0692ab5d8505f92c1a206ca 100644
--- a/src/cooling/EAGLE/cooling.h
+++ b/src/cooling/EAGLE/cooling.h
@@ -109,10 +109,11 @@ __attribute__((always_inline)) INLINE static float cooling_get_radiated_energy(
  * @param phys_const The physical constants in internal units.
  * @param cooling The cooling properties to initialize
  */
-static INLINE void cooling_init_backend(
-    struct swift_params* parameter_file, const struct unit_system* us,
-    const struct phys_const* phys_const,
-    struct cooling_function_data* cooling) {}
+static INLINE void cooling_init_backend(struct swift_params* parameter_file,
+                                        const struct unit_system* us,
+                                        const struct phys_const* phys_const,
+                                        struct cooling_function_data* cooling) {
+}
 
 /**
  * @brief Prints the properties of the cooling model to stdout.
diff --git a/src/cooling/const_du/cooling.h b/src/cooling/const_du/cooling.h
index f436e1e28360532c2bee1300369577b2376676f2..b6fea7eea7b0fb208c4bffece425ec836d5df0c0 100644
--- a/src/cooling/const_du/cooling.h
+++ b/src/cooling/const_du/cooling.h
@@ -163,10 +163,10 @@ __attribute__((always_inline)) INLINE static float cooling_get_radiated_energy(
  * @param phys_const The physical constants in internal units.
  * @param cooling The cooling properties to initialize
  */
-static INLINE void cooling_init_backend(
-    struct swift_params* parameter_file, const struct unit_system* us,
-    const struct phys_const* phys_const,
-    struct cooling_function_data* cooling) {
+static INLINE void cooling_init_backend(struct swift_params* parameter_file,
+                                        const struct unit_system* us,
+                                        const struct phys_const* phys_const,
+                                        struct cooling_function_data* cooling) {
 
   cooling->cooling_rate =
       parser_get_param_double(parameter_file, "ConstCooling:cooling_rate");
diff --git a/src/cooling/const_lambda/cooling.h b/src/cooling/const_lambda/cooling.h
index e54071204c9634a28bf57a2293d9d37bbc2593a8..f1a7abdbe14a39d98bbd01eb36ba870c8af0ee1a 100644
--- a/src/cooling/const_lambda/cooling.h
+++ b/src/cooling/const_lambda/cooling.h
@@ -171,10 +171,10 @@ __attribute__((always_inline)) INLINE static float cooling_get_radiated_energy(
  * @param phys_const The physical constants in internal units.
  * @param cooling The cooling properties to initialize
  */
-static INLINE void cooling_init_backend(
-    struct swift_params* parameter_file, const struct unit_system* us,
-    const struct phys_const* phys_const,
-    struct cooling_function_data* cooling) {
+static INLINE void cooling_init_backend(struct swift_params* parameter_file,
+                                        const struct unit_system* us,
+                                        const struct phys_const* phys_const,
+                                        struct cooling_function_data* cooling) {
 
   const double lambda_cgs =
       parser_get_param_double(parameter_file, "LambdaCooling:lambda_cgs");
diff --git a/src/cooling/none/cooling.h b/src/cooling/none/cooling.h
index bf096ff84ecf58c9c37cc23bb3e843d1b75934ee..0cc465adcdad8fe19afe4a9867e5d68a22ed9119 100644
--- a/src/cooling/none/cooling.h
+++ b/src/cooling/none/cooling.h
@@ -119,10 +119,11 @@ __attribute__((always_inline)) INLINE static float cooling_get_radiated_energy(
  * @param phys_const The physical constants in internal units.
  * @param cooling The cooling properties to initialize
  */
-static INLINE void cooling_init_backend(
-    struct swift_params* parameter_file, const struct unit_system* us,
-    const struct phys_const* phys_const,
-    struct cooling_function_data* cooling) {}
+static INLINE void cooling_init_backend(struct swift_params* parameter_file,
+                                        const struct unit_system* us,
+                                        const struct phys_const* phys_const,
+                                        struct cooling_function_data* cooling) {
+}
 
 /**
  * @brief Prints the properties of the cooling model to stdout.
diff --git a/src/cosmology.c b/src/cosmology.c
index 0cc528c8a095637de1b60a83a15181d63c43b092..09472fd77cd98185ff8799e79f687b6552bcd901 100644
--- a/src/cosmology.c
+++ b/src/cosmology.c
@@ -387,8 +387,7 @@ void cosmology_init_tables(struct cosmology *c) {
  * @param phys_const The physical constants in the current system of units.
  * @param c The #cosmology to initialise.
  */
-void cosmology_init(struct swift_params *params,
-                    const struct unit_system *us,
+void cosmology_init(struct swift_params *params, const struct unit_system *us,
                     const struct phys_const *phys_const, struct cosmology *c) {
 
   /* Read in the cosmological parameters */
diff --git a/src/cosmology.h b/src/cosmology.h
index 93751fba6f07785d25d8f8fc343d3ac2897fc19b..ea992d12deffbe60154ea56ca5fff69a1b06587c 100644
--- a/src/cosmology.h
+++ b/src/cosmology.h
@@ -181,8 +181,7 @@ double cosmology_get_therm_kick_factor(const struct cosmology *cosmo,
 double cosmology_get_delta_time(const struct cosmology *c, double a1,
                                 double a2);
 
-void cosmology_init(struct swift_params *params,
-                    const struct unit_system *us,
+void cosmology_init(struct swift_params *params, const struct unit_system *us,
                     const struct phys_const *phys_const, struct cosmology *c);
 
 void cosmology_init_no_cosmo(struct cosmology *c);
diff --git a/src/engine.c b/src/engine.c
index c62feb434d0eee53b938ee3770aaf87b70d2c859..c7a87500aab6b3b9f1bcbcf8409283f538324927 100644
--- a/src/engine.c
+++ b/src/engine.c
@@ -5421,10 +5421,9 @@ void engine_unpin(void) {
  * @param chemistry The chemistry information.
  * @param sourceterms The properties of the source terms function.
  */
-void engine_init(struct engine *e, struct space *s,
-                 struct swift_params *params, long long Ngas,
-                 long long Ngparts, long long Nstars, int policy, int verbose,
-                 struct repartition *reparttype,
+void engine_init(struct engine *e, struct space *s, struct swift_params *params,
+                 long long Ngas, long long Ngparts, long long Nstars,
+                 int policy, int verbose, struct repartition *reparttype,
                  const struct unit_system *internal_units,
                  const struct phys_const *physical_constants,
                  struct cosmology *cosmo, const struct hydro_props *hydro,
@@ -5552,10 +5551,9 @@ void engine_init(struct engine *e, struct space *s,
  * @param verbose Is this #engine talkative ?
  * @param restart_file The name of our restart file.
  */
-void engine_config(int restart, struct engine *e,
-                   struct swift_params *params, int nr_nodes, int nodeID,
-                   int nr_threads, int with_aff, int verbose,
-                   const char *restart_file) {
+void engine_config(int restart, struct engine *e, struct swift_params *params,
+                   int nr_nodes, int nodeID, int nr_threads, int with_aff,
+                   int verbose, const char *restart_file) {
 
   /* Store the values and initialise global fields. */
   e->nodeID = nodeID;
diff --git a/src/engine.h b/src/engine.h
index 877dbf362765d78e5aef603d3a0b7caebcfa6380..2b0af9aa6073327441ddef8fa25d091a89ff3d25 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -354,10 +354,9 @@ void engine_drift_top_multipoles(struct engine *e);
 void engine_reconstruct_multipoles(struct engine *e);
 void engine_print_stats(struct engine *e);
 void engine_dump_snapshot(struct engine *e);
-void engine_init(struct engine *e, struct space *s,
-                 struct swift_params *params, long long Ngas,
-                 long long Ngparts, long long Nstars, int policy, int verbose,
-                 struct repartition *reparttype,
+void engine_init(struct engine *e, struct space *s, struct swift_params *params,
+                 long long Ngas, long long Ngparts, long long Nstars,
+                 int policy, int verbose, struct repartition *reparttype,
                  const struct unit_system *internal_units,
                  const struct phys_const *physical_constants,
                  struct cosmology *cosmo, const struct hydro_props *hydro,
@@ -366,10 +365,9 @@ void engine_init(struct engine *e, struct space *s,
                  const struct cooling_function_data *cooling_func,
                  const struct chemistry_global_data *chemistry,
                  struct sourceterms *sourceterms);
-void engine_config(int restart, struct engine *e,
-                   struct swift_params *params, int nr_nodes, int nodeID,
-                   int nr_threads, int with_aff, int verbose,
-                   const char *restart_file);
+void engine_config(int restart, struct engine *e, struct swift_params *params,
+                   int nr_nodes, int nodeID, int nr_threads, int with_aff,
+                   int verbose, const char *restart_file);
 void engine_launch(struct engine *e);
 void engine_prepare(struct engine *e);
 void engine_init_particles(struct engine *e, int flag_entropy_ICs,
diff --git a/src/gravity_properties.c b/src/gravity_properties.c
index 05e28dc860a6b8c22c56d0c33fe78e2f8f828afd..481ed2cd5e35382cd85d9bec4f94c109738ffb70 100644
--- a/src/gravity_properties.c
+++ b/src/gravity_properties.c
@@ -37,8 +37,7 @@
 #define gravity_props_default_r_cut_min 0.1f
 #define gravity_props_default_rebuild_frequency 0.01f
 
-void gravity_props_init(struct gravity_props *p,
-                        struct swift_params *params,
+void gravity_props_init(struct gravity_props *p, struct swift_params *params,
                         const struct cosmology *cosmo) {
 
   /* Tree updates */
diff --git a/src/gravity_properties.h b/src/gravity_properties.h
index 6f0898a164077adc2af8f624da28ddf75c6951d4..7faaa88d5e82b7882404269009b2f0542896eee1 100644
--- a/src/gravity_properties.h
+++ b/src/gravity_properties.h
@@ -82,8 +82,7 @@ struct gravity_props {
 };
 
 void gravity_props_print(const struct gravity_props *p);
-void gravity_props_init(struct gravity_props *p,
-                        struct swift_params *params,
+void gravity_props_init(struct gravity_props *p, struct swift_params *params,
                         const struct cosmology *cosmo);
 void gravity_update(struct gravity_props *p, const struct cosmology *cosmo);
 
diff --git a/src/parallel_io.c b/src/parallel_io.c
index 8720a6ce6e00d6ca1e0c63410264ca5c96d71877..d37c8632675dc13e487e0c80e2f7390f5c14e527 100644
--- a/src/parallel_io.c
+++ b/src/parallel_io.c
@@ -1022,8 +1022,8 @@ void prepare_file(struct engine* e, const char* baseName, long long N_total[6],
   H5Gclose(h_grp);
 
   /* Print the runtime unused parameters */
-  h_grp =
-      H5Gcreate(h_file, "/UnusedParameters", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+  h_grp = H5Gcreate(h_file, "/UnusedParameters", H5P_DEFAULT, H5P_DEFAULT,
+                    H5P_DEFAULT);
   if (h_grp < 0) error("Error while creating parameters group");
   parser_write_params_to_hdf5(e->parameter_file, h_grp, 0);
   H5Gclose(h_grp);
diff --git a/src/physical_constants.c b/src/physical_constants.c
index b0f0df7745fe29b290062d7e039d6b33bdd6ad84..2c0ea6191b20e7786b0e2c55356b6c9decf7b0a4 100644
--- a/src/physical_constants.c
+++ b/src/physical_constants.c
@@ -38,8 +38,7 @@
  * @param params The parsed parameter file.
  * @param internal_const The physical constants to initialize.
  */
-void phys_const_init(const struct unit_system *us,
-                     struct swift_params *params,
+void phys_const_init(const struct unit_system *us, struct swift_params *params,
                      struct phys_const *internal_const) {
 
   /* Units are declared as {U_M, U_L, U_t, U_I, U_T} */
diff --git a/src/physical_constants.h b/src/physical_constants.h
index 75b79bc0a5f19bf0169a505eb82b8dccf2f8042a..606e7eeb584fc670c5c690aa9dfa683330ea3644 100644
--- a/src/physical_constants.h
+++ b/src/physical_constants.h
@@ -89,8 +89,7 @@ struct phys_const {
   double const_earth_mass;
 };
 
-void phys_const_init(const struct unit_system* us,
-                     struct swift_params* params,
+void phys_const_init(const struct unit_system* us, struct swift_params* params,
                      struct phys_const* internal_const);
 
 void phys_const_print(const struct phys_const* internal_const);
diff --git a/src/potential/disc_patch/potential.h b/src/potential/disc_patch/potential.h
index 290f4847e838a2252ebbc19fc7c6ce2d342710fb..40c747314994cfdc4a38679d747e3351e4fbd4d1 100644
--- a/src/potential/disc_patch/potential.h
+++ b/src/potential/disc_patch/potential.h
@@ -269,9 +269,9 @@ external_gravity_get_potential_energy(
  * @param potential The external potential properties to initialize
  */
 static INLINE void potential_init_backend(
-    struct swift_params* parameter_file,
-    const struct phys_const* phys_const, const struct unit_system* us,
-    const struct space* s, struct external_potential* potential) {
+    struct swift_params* parameter_file, const struct phys_const* phys_const,
+    const struct unit_system* us, const struct space* s,
+    struct external_potential* potential) {
 
   potential->surface_density = parser_get_param_double(
       parameter_file, "DiscPatchPotential:surface_density");
diff --git a/src/potential/isothermal/potential.h b/src/potential/isothermal/potential.h
index a9d3c7d6c3a2a6e4f9da9891e8bdc091a32cda68..4267c9becc7251ffe276b69f078e374504c22aab 100644
--- a/src/potential/isothermal/potential.h
+++ b/src/potential/isothermal/potential.h
@@ -162,9 +162,9 @@ external_gravity_get_potential_energy(
  * @param potential The external potential properties to initialize
  */
 static INLINE void potential_init_backend(
-    struct swift_params* parameter_file,
-    const struct phys_const* phys_const, const struct unit_system* us,
-    const struct space* s, struct external_potential* potential) {
+    struct swift_params* parameter_file, const struct phys_const* phys_const,
+    const struct unit_system* us, const struct space* s,
+    struct external_potential* potential) {
 
   potential->x =
       s->dim[0] / 2. +
diff --git a/src/potential/none/potential.h b/src/potential/none/potential.h
index c96b5e80f1435945dd58ff64539eae9c106202ac..2303f2531d059660a063a92be999405f05e9e6aa 100644
--- a/src/potential/none/potential.h
+++ b/src/potential/none/potential.h
@@ -98,9 +98,9 @@ external_gravity_get_potential_energy(
  * @param potential The external potential properties to initialize
  */
 static INLINE void potential_init_backend(
-    struct swift_params* parameter_file,
-    const struct phys_const* phys_const, const struct unit_system* us,
-    const struct space* s, struct external_potential* potential) {}
+    struct swift_params* parameter_file, const struct phys_const* phys_const,
+    const struct unit_system* us, const struct space* s,
+    struct external_potential* potential) {}
 
 /**
  * @brief Prints the properties of the external potential to stdout.
diff --git a/src/potential/point_mass/potential.h b/src/potential/point_mass/potential.h
index 0939adcb07700695d19b21f9bf6f813e2e8687e7..db875842d51f6c0a28dd1308fd7dd1728e746ce4 100644
--- a/src/potential/point_mass/potential.h
+++ b/src/potential/point_mass/potential.h
@@ -152,9 +152,9 @@ external_gravity_get_potential_energy(
  * @param potential The external potential properties to initialize
  */
 static INLINE void potential_init_backend(
-    struct swift_params* parameter_file,
-    const struct phys_const* phys_const, const struct unit_system* us,
-    const struct space* s, struct external_potential* potential) {
+    struct swift_params* parameter_file, const struct phys_const* phys_const,
+    const struct unit_system* us, const struct space* s,
+    struct external_potential* potential) {
 
   potential->x =
       parser_get_param_double(parameter_file, "PointMassPotential:position_x");
diff --git a/src/potential/point_mass_ring/potential.h b/src/potential/point_mass_ring/potential.h
index 5c38380a23e988bf33e9f71cad21d59956be66cb..551efe32521a5c5ee8068ba409dbb81547103e8f 100644
--- a/src/potential/point_mass_ring/potential.h
+++ b/src/potential/point_mass_ring/potential.h
@@ -192,9 +192,9 @@ external_gravity_get_potential_energy(
  * @param potential The external potential properties to initialize
  */
 static INLINE void potential_init_backend(
-    struct swift_params* parameter_file,
-    const struct phys_const* phys_const, const struct unit_system* us,
-    const struct space* s, struct external_potential* potential) {
+    struct swift_params* parameter_file, const struct phys_const* phys_const,
+    const struct unit_system* us, const struct space* s,
+    struct external_potential* potential) {
 
   potential->x =
       parser_get_param_double(parameter_file, "PointMassPotential:position_x");
diff --git a/src/potential/point_mass_softened/potential.h b/src/potential/point_mass_softened/potential.h
index 92f0ba145184f2033615c6b8967443c34c3cb440..80959ec923cbedcbea5fba3293c8ae4f94f65679 100644
--- a/src/potential/point_mass_softened/potential.h
+++ b/src/potential/point_mass_softened/potential.h
@@ -179,9 +179,9 @@ external_gravity_get_potential_energy(
  * @param potential The external potential properties to initialize
  */
 static INLINE void potential_init_backend(
-    struct swift_params* parameter_file,
-    const struct phys_const* phys_const, const struct unit_system* us,
-    const struct space* s, struct external_potential* potential) {
+    struct swift_params* parameter_file, const struct phys_const* phys_const,
+    const struct unit_system* us, const struct space* s,
+    struct external_potential* potential) {
 
   potential->x =
       parser_get_param_double(parameter_file, "PointMassPotential:position_x");
diff --git a/src/potential/sine_wave/potential.h b/src/potential/sine_wave/potential.h
index 9b72d36c1eb6af4f3d13382a87248233660b79fb..8a1786baaf9ed0b0683ea16fdefee997ecb4eceb 100644
--- a/src/potential/sine_wave/potential.h
+++ b/src/potential/sine_wave/potential.h
@@ -117,9 +117,9 @@ external_gravity_get_potential_energy(
  * @param potential The external potential properties to initialize
  */
 static INLINE void potential_init_backend(
-    struct swift_params* parameter_file,
-    const struct phys_const* phys_const, const struct unit_system* us,
-    const struct space* s, struct external_potential* potential) {
+    struct swift_params* parameter_file, const struct phys_const* phys_const,
+    const struct unit_system* us, const struct space* s,
+    struct external_potential* potential) {
 
   potential->amplitude =
       parser_get_param_double(parameter_file, "SineWavePotential:amplitude");
diff --git a/src/serial_io.c b/src/serial_io.c
index 136097f0e7ddd87c1e8b2f265c8d374af2ec84fe..4074f9bd54754f4b50a0e62a6a54089efb4d5bfb 100644
--- a/src/serial_io.c
+++ b/src/serial_io.c
@@ -883,8 +883,8 @@ void write_output_serial(struct engine* e, const char* baseName,
     H5Gclose(h_grp);
 
     /* Print the runtime unused parameters */
-    h_grp =
-      H5Gcreate(h_file, "/UnusedParameters", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    h_grp = H5Gcreate(h_file, "/UnusedParameters", H5P_DEFAULT, H5P_DEFAULT,
+                      H5P_DEFAULT);
     if (h_grp < 0) error("Error while creating parameters group");
     parser_write_params_to_hdf5(e->parameter_file, h_grp, 0);
     H5Gclose(h_grp);
diff --git a/src/single_io.c b/src/single_io.c
index 31aa40b3999aa6a46a1b0f22339070b24860fe57..975487a1d954e0144f4675f4b90b7cd3b70f3a13 100644
--- a/src/single_io.c
+++ b/src/single_io.c
@@ -736,8 +736,8 @@ void write_output_single(struct engine* e, const char* baseName,
   H5Gclose(h_grp);
 
   /* Print the runtime unused parameters */
-  h_grp =
-      H5Gcreate(h_file, "/UnusedParameters", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+  h_grp = H5Gcreate(h_file, "/UnusedParameters", H5P_DEFAULT, H5P_DEFAULT,
+                    H5P_DEFAULT);
   if (h_grp < 0) error("Error while creating parameters group");
   parser_write_params_to_hdf5(e->parameter_file, h_grp, 0);
   H5Gclose(h_grp);
diff --git a/src/units.c b/src/units.c
index af11d7de404c9a2060bd533ab4b8c4ecb666ecfa..48f0a3aee6e348b5df24ac41b308aebf6f70224a 100644
--- a/src/units.c
+++ b/src/units.c
@@ -77,8 +77,7 @@ void units_init(struct unit_system* us, double U_M_in_cgs, double U_L_in_cgs,
  * @param params The parsed parameter file.
  * @param category The section of the parameter file to read from.
  */
-void units_init_from_params(struct unit_system* us,
-                            struct swift_params* params,
+void units_init_from_params(struct unit_system* us, struct swift_params* params,
                             const char* category) {
 
   char buffer[200];
@@ -104,9 +103,8 @@ void units_init_from_params(struct unit_system* us,
  * @param category The section of the parameter file to read from.
  * @param def The default unit system to copy from if required.
  */
-void units_init_default(struct unit_system* us,
-                        struct swift_params* params, const char* category,
-                        const struct unit_system* def) {
+void units_init_default(struct unit_system* us, struct swift_params* params,
+                        const char* category, const struct unit_system* def) {
 
   if (!def) error("Default unit_system not allocated");
 
diff --git a/src/units.h b/src/units.h
index 1f0ef3cbd738176a82d61500e81f32bf8f02cf94..829a1ce542500308cbc64a2463545fbd23921eef 100644
--- a/src/units.h
+++ b/src/units.h
@@ -100,9 +100,8 @@ void units_init(struct unit_system* us, double U_M_in_cgs, double U_L_in_cgs,
                 double U_t_in_cgs, double U_C_in_cgs, double U_T_in_cgs);
 void units_init_from_params(struct unit_system*, struct swift_params*,
                             const char* category);
-void units_init_default(struct unit_system* us,
-                        struct swift_params* params, const char* category,
-                        const struct unit_system* def);
+void units_init_default(struct unit_system* us, struct swift_params* params,
+                        const char* category, const struct unit_system* def);
 
 int units_are_equal(const struct unit_system* a, const struct unit_system* b);