diff --git a/BasicSolver/2D-mpi/src/comm-v1.c b/BasicSolver/2D-mpi/src/comm-v1.c
index 16a0422..e2de966 100644
--- a/BasicSolver/2D-mpi/src/comm-v1.c
+++ b/BasicSolver/2D-mpi/src/comm-v1.c
@@ -4,6 +4,7 @@
  * Use of this source code is governed by a MIT style
  * license that can be found in the LICENSE file.
  */
+#include <stdio.h>
 #include <stdlib.h>
 
 #include "comm.h"