diff --git a/docs/develop/launch_ragflow_from_source.md b/docs/develop/launch_ragflow_from_source.md
index 5e16b6600b..c24f9561f7 100644
--- a/docs/develop/launch_ragflow_from_source.md
+++ b/docs/develop/launch_ragflow_from_source.md
@@ -101,7 +101,7 @@ docker compose -f docker/docker-compose-base.yml up -d
 
    ```shell
    JEMALLOC_PATH=$(pkg-config --variable=libdir jemalloc)/libjemalloc.so;
-   LD_PRELOAD=$JEMALLOC_PATH python rag/svr/task_executor.py 1;
+   LD_PRELOAD=$JEMALLOC_PATH python rag/svr/task_executor.py -i 1;
    ```
    ```shell
    python api/ragflow_server.py;