diff --git a/src/components/AccountCreateUpdateForm/index.vue b/src/components/AccountCreateUpdateForm/index.vue
index 2fe31003a..c82770883 100644
--- a/src/components/AccountCreateUpdateForm/index.vue
+++ b/src/components/AccountCreateUpdateForm/index.vue
@@ -88,6 +88,9 @@ export default {
           }
         },
         username: {
+          el: {
+            disabled: !!this.account?.name
+          },
           on: {
             input: ([value], updateForm) => {
               this.usernameChanged = true