diff --git a/src/content.cpp b/src/content.cpp
index 2b3d55b..08ec442 100644
--- a/src/content.cpp
+++ b/src/content.cpp
@@ -2,6 +2,7 @@
 #include "game.h"
 #include "assets/sprite.h"
 #include "assets/tileset.h"
+#include <stdlib.h>
 
 using namespace TL;