diff --git a/qutebrowser/userscripts/clean-url b/qutebrowser/userscripts/clean-url
index 5cbac55..c2c9ab1 100755
--- a/qutebrowser/userscripts/clean-url
+++ b/qutebrowser/userscripts/clean-url
@@ -3,7 +3,6 @@
 import os
 from urllib.parse import urlparse, urlunparse
 
-mode = os.environ["QUTE_MODE"]
 url = os.environ["QUTE_URL"]
 fifo = os.environ["QUTE_FIFO"]