diff --git a/domains/lopo.json b/domains/lopo.json
index 7fee8cf502..8fd167885c 100644
--- a/domains/lopo.json
+++ b/domains/lopo.json
@@ -1,6 +1,6 @@
 {
     "owner": {
-        "username": "lopo12123"
+        "username": "lopo12123",
         "email": "lopo@zju.edu.cn"
     },
     "records": {