diff --git a/lib/domains/stoplist.txt b/lib/domains/stoplist.txt
index bfa3e462b6..39c96591f5 100644
--- a/lib/domains/stoplist.txt
+++ b/lib/domains/stoplist.txt
@@ -333,4 +333,5 @@ studenti.polito.it
 hbut.edu.cn 
 nihaomeimei.me
 stu.peihua.edu.cn
-me
\ No newline at end of file
+me
+cf
\ No newline at end of file