diff --git a/backend/product/permissions.py b/backend/product/permissions.py
index cc80222..6ec8c32 100644
--- a/backend/product/permissions.py
+++ b/backend/product/permissions.py
@@ -104,7 +104,7 @@ class ProductVariantAdminPermission:
 
 
 class ProductVariantInlineAdminPermission:
-    def has_add_permission(self, request, obj):
+    def has_add_permission(self, request):
         return True
     
     def has_change_permission(self, request, obj=None):