diff --git a/engine/install/ubuntu.md b/engine/install/ubuntu.md
index d84610e2b6..1ee5454d9c 100644
--- a/engine/install/ubuntu.md
+++ b/engine/install/ubuntu.md
@@ -154,6 +154,7 @@ from the repository.
     image.
 
     ```console
+    $ sudo service docker start
     $ sudo docker run hello-world
     ```