diff --git a/ClearURLs for uBo/compile.py b/ClearURLs for uBo/compile.py
index 269ef2779..af2aa2f11 100644
--- a/ClearURLs for uBo/compile.py	
+++ b/ClearURLs for uBo/compile.py	
@@ -29,6 +29,7 @@
 #from typing import IO
 
 import requests  # type: ignore
+import sys
 from typing import IO
 
 HEAD = """\