diff --git a/funasr/runtime/python/websocket/funasr_wss_client.py b/funasr/runtime/python/websocket/funasr_wss_client.py
index f4f35bb6d..7c9655332 100644
--- a/funasr/runtime/python/websocket/funasr_wss_client.py
+++ b/funasr/runtime/python/websocket/funasr_wss_client.py
@@ -27,7 +27,7 @@ parser.add_argument("--port",
                     help="grpc server port")
 parser.add_argument("--chunk_size",
                     type=str,
-                    default="5, 10, 5",
+                    default="0, 10, 5",
                     help="chunk")
 parser.add_argument("--encoder_chunk_look_back",
                     type=int,