diff --git a/src/core/mpi/MPIWrapper.h b/src/core/mpi/MPIWrapper.h
index 211c3292feadff1a989c96a911f41338eb33c23f..a416cacc4044f4e30916f15c0927cd0bc7a26ab0 100755
--- a/src/core/mpi/MPIWrapper.h
+++ b/src/core/mpi/MPIWrapper.h
@@ -264,7 +264,7 @@ inline double MPI_Wtime() { WALBERLA_MPI_FUNCTION_ERROR }
 #undef WALBERLA_MPI_FUNCTION_ERROR
 
 } // namespace mpistubs
-using namespace mpistubs
+using namespace mpistubs;
 
 } // namespace walberla