diff --git a/domains/mamun.json b/domains/mamun.json
index 989dee3c4f..ba31b4943d 100644
--- a/domains/mamun.json
+++ b/domains/mamun.json
@@ -1,6 +1,6 @@
 {
   "owner": {
-    "username": "Cyberrvault"
+    "username": "cyberrvault",
     "email": "cyberrvault@gmail.com"
   },
   "records": {