1 files changed, 2 insertions, 3 deletions
diff --git a/src/slab.c b/src/slab.c
index b461b82..fb3425f 100644
--- a/src/slab.c
+++ b/src/slab.c
@@ -302,8 +302,7 @@ get_mpi_comm (const cGH * restrict const cctkGH)
     return PUGH_pGH(cctkGH)->PUGH_COMM_WORLD;
   }
 #  endif
-  assert (0);
-  return -1;
+  return MPI_COMM_WORLD;
 #else
   return 0;
 #endif
@@ -384,7 +383,7 @@ normal_type (int cactustype)
 
 
 /* Find the MPI datatype corresponding to a Cactus datatype */
-static int mpi_type (int const cactustype)
+static MPI_Datatype mpi_type (int const cactustype)
 {
   int const normaltype = normal_type (cactustype);
   switch (normaltype) {