diff --git a/addons/product/models/product.py b/addons/product/models/product.py
index adc4a69e4f9..8254ccde804 100644
--- a/addons/product/models/product.py
+++ b/addons/product/models/product.py
@@ -65,6 +65,7 @@ class ProductCategory(models.Model):
         main_category = self.env.ref('product.product_category_all')
         if main_category in self:
             raise UserError(_("You cannot delete this product category, it is the default generic category."))
+        return super().unlink()
 
 
 class ProductProduct(models.Model):