1 files changed, 1 insertions, 0 deletions
diff --git a/mpi/src/main.c b/mpi/src/main.c
index 02e2bb6..ea6c4d7 100644
--- a/mpi/src/main.c
+++ b/mpi/src/main.c
@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <mpi.h>
+#include <stddef.h>
 
 #include "file.h"
 #include "game.h"