diff --git a/domains/caodoc.json b/domains/caodoc.json
index 4f6ad82bb..8682070a5 100644
--- a/domains/caodoc.json
+++ b/domains/caodoc.json
@@ -4,6 +4,6 @@
         "email": "dochicao2306@gmail.com"
     },
     "record": {
-        "URL": "caodoc.github.io"
+        "CNAME": "caodoc.github.io"
     }
 }