diff --git a/libsrc/core/generate_mpi_sources.py b/libsrc/core/generate_mpi_sources.py
index aa47ee03..b1eae34a 100644
--- a/libsrc/core/generate_mpi_sources.py
+++ b/libsrc/core/generate_mpi_sources.py
@@ -36,7 +36,7 @@ functions = [
         ("int", "MPI_Type_free", "MPI_Datatype*"),
         ("int", "MPI_Type_get_extent", "MPI_Datatype", "MPI_Aint*", "MPI_Aint*"),
         ("int", "MPI_Type_indexed", "int", "int*:0", "int*:0", "MPI_Datatype", "MPI_Datatype*"),
-        ("int", "MPI_Type_size", "MPI_Datatype*", "int*"),
+        ("int", "MPI_Type_size", "MPI_Datatype", "int*"),
         ("int", "MPI_Wait", "MPI_Request*", "MPI_Status*"),
         ("int", "MPI_Waitall", "int", "MPI_Request*:0", "MPI_Status*"),
         ("int", "MPI_Waitany", "int", "MPI_Request*:0", "int*", "MPI_Status*"),
diff --git a/libsrc/core/ng_mpi_generated_declarations.hpp b/libsrc/core/ng_mpi_generated_declarations.hpp
index bed3d1c1..f9bf5088 100644
--- a/libsrc/core/ng_mpi_generated_declarations.hpp
+++ b/libsrc/core/ng_mpi_generated_declarations.hpp
@@ -35,7 +35,7 @@ NGCORE_API extern int (*NG_MPI_Type_create_struct)(int, int*, NG_MPI_Aint*, NG_M
 NGCORE_API extern int (*NG_MPI_Type_free)(NG_MPI_Datatype*);
 NGCORE_API extern int (*NG_MPI_Type_get_extent)(NG_MPI_Datatype, NG_MPI_Aint*, NG_MPI_Aint*);
 NGCORE_API extern int (*NG_MPI_Type_indexed)(int, int*, int*, NG_MPI_Datatype, NG_MPI_Datatype*);
-NGCORE_API extern int (*NG_MPI_Type_size)(NG_MPI_Datatype*, int*);
+NGCORE_API extern int (*NG_MPI_Type_size)(NG_MPI_Datatype, int*);
 NGCORE_API extern int (*NG_MPI_Wait)(NG_MPI_Request*, NG_MPI_Status*);
 NGCORE_API extern int (*NG_MPI_Waitall)(int, NG_MPI_Request*, NG_MPI_Status*);
 NGCORE_API extern int (*NG_MPI_Waitany)(int, NG_MPI_Request*, int*, NG_MPI_Status*);
diff --git a/libsrc/core/ng_mpi_generated_dummy_init.hpp b/libsrc/core/ng_mpi_generated_dummy_init.hpp
index a9a792a5..6050bdee 100644
--- a/libsrc/core/ng_mpi_generated_dummy_init.hpp
+++ b/libsrc/core/ng_mpi_generated_dummy_init.hpp
@@ -35,7 +35,7 @@ decltype(NG_MPI_Type_create_struct) NG_MPI_Type_create_struct = [](int, int*, NG
 decltype(NG_MPI_Type_free) NG_MPI_Type_free = [](NG_MPI_Datatype*)->int { throw no_mpi(); };
 decltype(NG_MPI_Type_get_extent) NG_MPI_Type_get_extent = [](NG_MPI_Datatype, NG_MPI_Aint*, NG_MPI_Aint*)->int { throw no_mpi(); };
 decltype(NG_MPI_Type_indexed) NG_MPI_Type_indexed = [](int, int*, int*, NG_MPI_Datatype, NG_MPI_Datatype*)->int { throw no_mpi(); };
-decltype(NG_MPI_Type_size) NG_MPI_Type_size = [](NG_MPI_Datatype*, int*)->int { throw no_mpi(); };
+decltype(NG_MPI_Type_size) NG_MPI_Type_size = [](NG_MPI_Datatype, int*)->int { throw no_mpi(); };
 decltype(NG_MPI_Wait) NG_MPI_Wait = [](NG_MPI_Request*, NG_MPI_Status*)->int { throw no_mpi(); };
 decltype(NG_MPI_Waitall) NG_MPI_Waitall = [](int, NG_MPI_Request*, NG_MPI_Status*)->int { throw no_mpi(); };
 decltype(NG_MPI_Waitany) NG_MPI_Waitany = [](int, NG_MPI_Request*, int*, NG_MPI_Status*)->int { throw no_mpi(); };
diff --git a/libsrc/core/ng_mpi_generated_init.hpp b/libsrc/core/ng_mpi_generated_init.hpp
index f4dcf2b7..b44bc2a7 100644
--- a/libsrc/core/ng_mpi_generated_init.hpp
+++ b/libsrc/core/ng_mpi_generated_init.hpp
@@ -35,7 +35,7 @@ NG_MPI_Type_create_struct = [](int arg0, int* arg1, NG_MPI_Aint* arg2, NG_MPI_Da
 NG_MPI_Type_free = [](NG_MPI_Datatype* arg0)->int { return MPI_Type_free( ng2mpi(arg0)); };
 NG_MPI_Type_get_extent = [](NG_MPI_Datatype arg0, NG_MPI_Aint* arg1, NG_MPI_Aint* arg2)->int { return MPI_Type_get_extent( ng2mpi(arg0),  ng2mpi(arg1),  ng2mpi(arg2)); };
 NG_MPI_Type_indexed = [](int arg0, int* arg1, int* arg2, NG_MPI_Datatype arg3, NG_MPI_Datatype* arg4)->int { return MPI_Type_indexed( arg0,  arg1,  arg2,  ng2mpi(arg3),  ng2mpi(arg4)); };
-NG_MPI_Type_size = [](NG_MPI_Datatype* arg0, int* arg1)->int { return MPI_Type_size( ng2mpi(arg0),  arg1); };
+NG_MPI_Type_size = [](NG_MPI_Datatype arg0, int* arg1)->int { return MPI_Type_size( ng2mpi(arg0),  arg1); };
 NG_MPI_Wait = [](NG_MPI_Request* arg0, NG_MPI_Status* arg1)->int { return MPI_Wait( ng2mpi(arg0),  ng2mpi(arg1)); };
 NG_MPI_Waitall = [](int arg0, NG_MPI_Request* arg1, NG_MPI_Status* arg2)->int { return MPI_Waitall( arg0,  ng2mpi(arg1, arg0),  ng2mpi(arg2)); };
 NG_MPI_Waitany = [](int arg0, NG_MPI_Request* arg1, int* arg2, NG_MPI_Status* arg3)->int { return MPI_Waitany( arg0,  ng2mpi(arg1, arg0),  arg2,  ng2mpi(arg3)); };