diff --git a/docs/sources/userguide/dockerizing.md b/docs/sources/userguide/dockerizing.md
index 2d9406bfed..a78fa45bac 100644
--- a/docs/sources/userguide/dockerizing.md
+++ b/docs/sources/userguide/dockerizing.md
@@ -179,7 +179,7 @@ has just stopped.
 
 Let's check it worked with the `docker ps` command.
 
-    $ docker ps
+    $ sudo docker ps
     CONTAINER ID  IMAGE         COMMAND               CREATED        STATUS       PORTS NAMES
 
 Excellent. Our container has been stopped.