diff --git a/js/apps/admin-ui/src/user/UserForm.tsx b/js/apps/admin-ui/src/user/UserForm.tsx
index 294d04dea8..cc40f4585c 100644
--- a/js/apps/admin-ui/src/user/UserForm.tsx
+++ b/js/apps/admin-ui/src/user/UserForm.tsx
@@ -387,7 +387,7 @@ export const UserForm = ({
           isDisabled={
             !user?.id &&
             !watchUsernameInput &&
-            !realm.registrationEmailAsUsername
+            realm.registrationEmailAsUsername === false
           }
           variant="primary"
           type="submit"