diff --git a/src/modules/system/users/components/UserEditingModal.vue b/src/modules/system/users/components/UserEditingModal.vue
index 59ee13a8..288e84c2 100644
--- a/src/modules/system/users/components/UserEditingModal.vue
+++ b/src/modules/system/users/components/UserEditingModal.vue
@@ -178,7 +178,7 @@ const handleCreateUser = async () => {
                 ['length:0,50'],
                 [
                   'matches',
-                  /^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-\_]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$/,
+                  /^[a-z0-9]([-a-z0-9]*[a-z0-9])?(.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*$/,
                 ],
               ]"
               :validation-messages="{