diff --git a/backend/product/views.py b/backend/product/views.py
index aca61be..f9099e1 100644
--- a/backend/product/views.py
+++ b/backend/product/views.py
@@ -142,9 +142,9 @@ class AllProductsView(APIView):
     )
     def get(self, request):
         try:
-            category_id = int(request.query_params.get('category', None))
+            category_id = request.query_params.get('category', None)
             if category_id:
-                sub_category = get_object_or_404(SubCategoryModel, pk=category_id)
+                sub_category = get_object_or_404(SubCategoryModel, pk=int(category_id))
                 products = ProductModel.objects.filter(category=sub_category)
             else:
                 products = ProductModel.objects.all()