diff --git a/Contrib/Modern UI/System.nsh b/Contrib/Modern UI/System.nsh
index 86bf16da..0123133b 100644
--- a/Contrib/Modern UI/System.nsh	
+++ b/Contrib/Modern UI/System.nsh	
@@ -32,6 +32,8 @@
 !include "WinMessages.nsh"
 !verbose pop
 
+!define MUI_SYSVERSION "1.68"
+
 Var MUI_TEMP1
 Var MUI_TEMP2