diff --git a/src/common_io.c b/src/common_io.c
index aecd0da609d229b21c4930e3a923ba0863d02c9b..7d0b0cb3ef026eb7bbbe17b82fb072f83c395305 100644
--- a/src/common_io.c
+++ b/src/common_io.c
@@ -692,6 +692,7 @@ void io_duplicate_hydro_gparts_mapper(void* restrict data, int Ngas,
  * This function assumes that the DM particles are all at the start of the
  * gparts array and adds the hydro particles afterwards
  *
+ * @param tp The current #threadpool.
  * @param parts The array of #part freshly read in.
  * @param gparts The array of #gpart freshly read in with all the DM particles
  * at the start
@@ -747,6 +748,7 @@ void io_duplicate_hydro_sparts_mapper(void* restrict data, int Nstars,
  * This function assumes that the DM particles and gas particles are all at
  * the start of the gparts array and adds the star particles afterwards
  *
+ * @param tp The current #threadpool.
  * @param sparts The array of #spart freshly read in.
  * @param gparts The array of #gpart freshly read in with all the DM and gas
  * particles at the start.
diff --git a/src/parallel_io.c b/src/parallel_io.c
index d7613aff5f157c8648fd0066d6412a366aabee05..0711cc1d8ec3014ea23a2abf1d7c31309539fed2 100644
--- a/src/parallel_io.c
+++ b/src/parallel_io.c
@@ -530,6 +530,7 @@ void writeArray(struct engine* e, hid_t grp, char* fileName, FILE* xmfFile,
  * @param mpi_size The number of MPI ranks
  * @param comm The MPI communicator
  * @param info The MPI information object
+ * @param n_threads The number of threads to use for local operations.
  * @param dry_run If 1, don't read the particle. Only allocates the arrays.
  *
  */
diff --git a/src/serial_io.c b/src/serial_io.c
index 81406482c69c61f9352c0da90edd9d0b181dc665..7f87c0183d637e8266f80e208783411664274edd 100644
--- a/src/serial_io.c
+++ b/src/serial_io.c
@@ -380,6 +380,7 @@ void writeArray(const struct engine* e, hid_t grp, char* fileName,
  * @param mpi_size The number of MPI ranks
  * @param comm The MPI communicator
  * @param info The MPI information object
+ * @param n_threads The number of threads to use for local operations.
  * @param dry_run If 1, don't read the particle. Only allocates the arrays.
  *
  * Opens the HDF5 file fileName and reads the particles contained