diff --git a/pkgs/http/lib/src/io_client.dart b/pkgs/http/lib/src/io_client.dart
index 2550fd5ffb..a8faff7a0f 100644
--- a/pkgs/http/lib/src/io_client.dart
+++ b/pkgs/http/lib/src/io_client.dart
@@ -65,7 +65,7 @@ class IOClient extends BaseClient {
           ByteStream(stream.transform(StreamTransformer.fromBind((d) async* {
         await for (var data in d) {
           load += data.length;
-          request.onUploadProgress!.call(contentLength, load);
+          request.onUploadProgress!(contentLength, load);
           yield data;
         }
       })));