diff --git a/stored_requests/backends/http_fetcher/fetcher.go b/stored_requests/backends/http_fetcher/fetcher.go
index 91a86226984..9777a21ba55 100644
--- a/stored_requests/backends/http_fetcher/fetcher.go
+++ b/stored_requests/backends/http_fetcher/fetcher.go
@@ -94,7 +94,8 @@ func (fetcher *HttpFetcher) FetchCategories(ctx context.Context, primaryAdServer
 	if data, ok := fetcher.Categories[dataName]; ok {
 		return data[iabCategory].Id, nil
 	}
-
+	//in NewFetcher function there is a code to add "?" at the end of url
+	//in case of categories we don't expect to have any parameters, that's why we need to remove "?"
 	url := fmt.Sprintf("%s/%s/%s.json", strings.Replace(fetcher.Endpoint, "?", "", -1), primaryAdServer, publisherId)
 
 	httpReq, err := http.NewRequest("GET", url, nil)