diff --git a/source/gui/Scripting/JSInterface_GUIProxy.h b/source/gui/Scripting/JSInterface_GUIProxy.h
index e3104a7265..b09c0aa0e9 100644
--- a/source/gui/Scripting/JSInterface_GUIProxy.h
+++ b/source/gui/Scripting/JSInterface_GUIProxy.h
@@ -18,6 +18,7 @@
 #ifndef INCLUDED_JSI_GUIPROXY
 #define INCLUDED_JSI_GUIPROXY
 
+#include "gui/ObjectBases/IGUIObject.h"
 #include "scriptinterface/ScriptExtraHeaders.h"
 
 #include <memory>