diff --git a/Headers/gnustep/gui/AppKit.h b/Headers/gnustep/gui/AppKit.h
index 7c895222a..7dc4c65f1 100644
--- a/Headers/gnustep/gui/AppKit.h
+++ b/Headers/gnustep/gui/AppKit.h
@@ -29,6 +29,8 @@
 #ifndef _GNUstep_H_AppKit
 #define _GNUstep_H_AppKit
 
+/* Define library version */
+#include <AppKit/GSVersion.h>
 
 //
 // Foundation