diff --git a/src/kits/interface/PrivateScreen.cpp b/src/kits/interface/PrivateScreen.cpp
index 4bf05862e2..90f0be318f 100644
--- a/src/kits/interface/PrivateScreen.cpp
+++ b/src/kits/interface/PrivateScreen.cpp
@@ -26,7 +26,7 @@
 //------------------------------------------------------------------------------
 
 #include <Window.h>
-
+#include <stdlib.h>
 
 #include "PrivateScreen.h"