diff --git a/Contrib/Modern UI/System.nsh b/Contrib/Modern UI/System.nsh
index 7cc6e721..bc753693 100644
--- a/Contrib/Modern UI/System.nsh	
+++ b/Contrib/Modern UI/System.nsh	
@@ -1510,7 +1510,7 @@
   !endif
   
   !ifdef MUI_CUSTOMFUNCTION_UNGUIINIT
-    Call "${MUI_CUSTOMFUNCTION_UNGUIINIT}
+    Call "${MUI_CUSTOMFUNCTION_UNGUIINIT}"
   !endif
   
   FunctionEnd