diff --git a/WindowSystem.h b/WindowSystem.h
index d69dea4d..da308999 100644
--- a/WindowSystem.h
+++ b/WindowSystem.h
@@ -32,7 +32,7 @@ class CWindowStack
 
 	CMenuBaseWindow *Current() const { return stack.IsValidIndex( active ) ? stack[active] : NULL; }
 
-	bool IsActive( void ) { return !stack.IsEmpty(); }
+	bool IsActive( void ) { return stack.Count() > 0; }
 	int  Count( void ) { return stack.Count(); }
 	void Clean( void )
 	{