diff --git a/src/STUBS/mpi.cpp b/src/STUBS/mpi.cpp
index 43e0a7f02d..cf8b3e2b28 100644
--- a/src/STUBS/mpi.cpp
+++ b/src/STUBS/mpi.cpp
@@ -142,6 +142,11 @@ void MPI_Cart_shift(MPI_Comm comm, int direction, int displ,
   *source = *dest = 0;
 }
 
+void MPI_Cart_rank(MPI_Comm comm, int *coords, int *rank)
+{
+  *rank = 0;
+}
+
 void MPI_Barrier(MPI_Comm comm) {}
 
 void MPI_Bcast(void *buf, int count, MPI_Datatype datatype,
diff --git a/src/STUBS/mpi.h b/src/STUBS/mpi.h
index 654c9d5a95..06015e824a 100644
--- a/src/STUBS/mpi.h
+++ b/src/STUBS/mpi.h
@@ -78,6 +78,7 @@ void MPI_Cart_get(MPI_Comm comm, int maxdims, int *dims, int *periods,
 		  int *coords);
 void MPI_Cart_shift(MPI_Comm comm, int direction, int displ,
 		    int *source, int *dest);
+void MPI_Cart_rank(MPI_Comm comm, int *coords, int *rank);
 
 void MPI_Barrier(MPI_Comm comm);
 void MPI_Bcast(void *buf, int count, MPI_Datatype datatype,