diff --git a/domains/lum.json b/domains/lum.json
index b093b9ea9e..20511b6403 100644
--- a/domains/lum.json
+++ b/domains/lum.json
@@ -4,6 +4,6 @@
         "email": "lin.yuxiang.contact@gmail.com"
     },
     "records": {
-        "CNAME": "Lum1104.github.io"
+        "CNAME": "lum1104.github.io"
     }
-}
\ No newline at end of file
+}