diff --git a/lib/codereview/codereview.py b/lib/codereview/codereview.py
index ba1a6fb..d87a7b3 100644
--- a/lib/codereview/codereview.py
+++ b/lib/codereview/codereview.py
@@ -1102,9 +1102,10 @@
 	return userline
 
 def FindContributor(ui, repo, user, warn=True):
+	user = user.lower()
 	m = re.match(r".*<(.*)>", user)
 	if m:
-		user = m.group(1).lower()
+		user = m.group(1)
 
 	if user not in contributors:
 		if warn: