diff --git a/plugins/peopsxgl/gpucfg/callbacks.c b/plugins/peopsxgl/gpucfg/callbacks.c
index 1f43818..59bb6d6 100644
--- a/plugins/peopsxgl/gpucfg/callbacks.c
+++ b/plugins/peopsxgl/gpucfg/callbacks.c
@@ -6,6 +6,7 @@
 #include "interface.h"
 #include "support.h"
 #include <stdio.h>
+#include <stdlib.h>
 
 void SaveConfig(void);