diff --git a/src/pass_mpi_collective.cpp b/src/pass_mpi_collective.cpp
index 24b4b3d79da374c31c05cf4d3dd4cb693cec0178..2bf0920fe9751d1ff0423cbe6f311488f236fb1d 100644
--- a/src/pass_mpi_collective.cpp
+++ b/src/pass_mpi_collective.cpp
@@ -624,7 +624,6 @@ int pass_mpi_collective::__better_rank_collective(basic_block bb,
 	if (((bb_data *) bb->aux)->mpi_code == mpi_code)
 	{
 		next_rank++;
-		printf("set rank %d at %d for coll %d\n", next_rank, bb->index, mpi_code);
 	}
 	((bb_data *) bb->aux)->collective_rank[mpi_code] = next_rank;