diff --git a/engine/install/ubuntu.md b/engine/install/ubuntu.md
index b6a677bfd25..846d8920469 100644
--- a/engine/install/ubuntu.md
+++ b/engine/install/ubuntu.md
@@ -187,6 +187,7 @@ Docker from the repository.
    `hello-world` image.
 
    ```console
+   $ sudo service docker start
    $ sudo docker run hello-world
    ```