diff --git a/examples/main.c b/examples/main.c
index 7cb0f9f77238bd26b5f39ac72910148edf60970d..45df57395cef2a8a04f0feadfc06931127a0af95 100644
--- a/examples/main.c
+++ b/examples/main.c
@@ -604,7 +604,7 @@ int main(int argc, char *argv[]) {
     if (with_cosmology)
       cosmology_init(params, &us, &prog_const, &cosmo);
     else
-      cosmology_init_no_cosmo(params, &us, &prog_const, &cosmo);
+      cosmology_init_no_cosmo(&cosmo);
     if (with_cosmology) cosmology_print(&cosmo);
 
     /* Initialise the hydro properties */
diff --git a/src/cosmology.c b/src/cosmology.c
index 5d5b45c2d00cd614e92da3de3335e7b558a727ea..053f94da9bfd3e94d212c0418adb29ac880c6695 100644
--- a/src/cosmology.c
+++ b/src/cosmology.c
@@ -437,10 +437,7 @@ void cosmology_init(const struct swift_params *params,
  * @param phys_const The physical constants in the current system of units.
  * @param c The #cosmology to initialise.
  */
-void cosmology_init_no_cosmo(const 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) {
 
   c->Omega_m = 0.;
   c->Omega_r = 0.;
diff --git a/src/cosmology.h b/src/cosmology.h
index 71104f94c773e1bf46af40103e039f2caf87cb24..b0b993afb217c595e8e3932a5e8ed9a30eefe6e7 100644
--- a/src/cosmology.h
+++ b/src/cosmology.h
@@ -170,10 +170,7 @@ void cosmology_init(const struct swift_params *params,
                     const struct unit_system *us,
                     const struct phys_const *phys_const, struct cosmology *c);
 
-void cosmology_init_no_cosmo(const 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);
 
 void cosmology_print(const struct cosmology *c);
 void cosmology_clean(struct cosmology *c);