diff --git a/src/core/mpi/MPIWrapper.h b/src/core/mpi/MPIWrapper.h
old mode 100755
new mode 100644
index 5da7a429d5b57c52b856e293a033eac3e746d519..f97cb06b197565e4fdbb15f8e1983a614053e250
--- a/src/core/mpi/MPIWrapper.h
+++ b/src/core/mpi/MPIWrapper.h
@@ -236,6 +236,7 @@ inline int MPI_Allgather ( void*, int, MPI_Datatype, void*, int, MPI_Datatype, M
 inline int MPI_Gather    ( void*, int, MPI_Datatype, void*, int, MPI_Datatype, int, MPI_Comm )  { WALBERLA_MPI_FUNCTION_ERROR }
 inline int MPI_Allgatherv( void*, int, MPI_Datatype, void*, int*, int*, MPI_Datatype, MPI_Comm ) { WALBERLA_MPI_FUNCTION_ERROR }
 inline int MPI_Gatherv   ( void*, int, MPI_Datatype, void*, int*, int*, MPI_Datatype, int, MPI_Comm ) { WALBERLA_MPI_FUNCTION_ERROR }
+inline int MPI_Alltoall  ( void*, int, MPI_Datatype, void*, int, MPI_Datatype, MPI_Comm ) { WALBERLA_MPI_FUNCTION_ERROR }
 
 inline int MPI_Type_contiguous( int, MPI_Datatype, MPI_Datatype* ) { WALBERLA_MPI_FUNCTION_ERROR }
 inline int MPI_Type_create_subarray( int, const int*, const int*, const int*, int, MPI_Datatype, MPI_Datatype* ) { WALBERLA_MPI_FUNCTION_ERROR }