diff --git a/domains/mateus.json b/domains/mateus.json
index df2dbbc12..235c408d1 100644
--- a/domains/mateus.json
+++ b/domains/mateus.json
@@ -1,6 +1,6 @@
 {
     "owner": {
-        "username": "CostaMateus",
+        "username": "costamateus",
         "email": "mateus@costamateus.com.br"
     },
     "record": {