diff --git a/src/main/java/vn/zalopay/benchmark/core/message/Writer.java b/src/main/java/vn/zalopay/benchmark/core/message/Writer.java
index b369b3ca..2dda7a5a 100644
--- a/src/main/java/vn/zalopay/benchmark/core/message/Writer.java
+++ b/src/main/java/vn/zalopay/benchmark/core/message/Writer.java
@@ -47,6 +47,7 @@ public void onNext(T message) {
             grpcResponse.storeGrpcMessage(jsonPrinter.print(message));
         } catch (InvalidProtocolBufferException e) {
             LOGGER.warn(e.getMessage());
+            grpcResponse.storeGrpcMessage(message.toString());
         }
     }
 }