diff --git a/src/Main.cpp b/src/Main.cpp
index 65947dff..f5ee1c78 100644
--- a/src/Main.cpp
+++ b/src/Main.cpp
@@ -1,5 +1,6 @@
 #include "Main.h"
 
+#include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <string>