diff --git a/modoboa/admin/models/alias.py b/modoboa/admin/models/alias.py
index a7a7208e1..808d0668d 100644
--- a/modoboa/admin/models/alias.py
+++ b/modoboa/admin/models/alias.py
@@ -35,7 +35,7 @@ def validate_alias_address(address, creator, internal=False, instance=None):
     if not instance or instance.address != address:
         if Alias.objects.filter(address=address, internal=internal).exists():
             raise ValidationError(_("An alias with this name already exists."))
-    if instance is None and not creator.is_superuser:
+    if instance is None:
         try:
             # Check creator limits
             core_signals.can_create_object.send(