diff --git a/backend/product/views.py b/backend/product/views.py
index e291685..5b76a30 100644
--- a/backend/product/views.py
+++ b/backend/product/views.py
@@ -164,7 +164,7 @@ class AllProductsView(APIView):
             products = ProductModel.objects.all()
 
             if category_slug:
-                if 'category' in category_slug:
+                if 'category' not  in category_slug:
                     sub_category = get_object_or_404(SubCategoryModel, slug=category_slug)
                     products = ProductModel.objects.filter(category=sub_category)
                 else: