diff --git a/src/Asset.cpp b/src/Asset.cpp
index e15fc00..f6ab4e8 100644
--- a/src/Asset.cpp
+++ b/src/Asset.cpp
@@ -2,6 +2,7 @@
 Asset
 ================================================================ */
 #include "Asset.hpp"
+#include <stdlib.h>
 Asset::Asset() {
   flags = 0;
   data = NULL;