diff --git a/docs/sources/userguide/dockerizing.md b/docs/sources/userguide/dockerizing.md
index 10763cd080..7b8a5f0d05 100644
--- a/docs/sources/userguide/dockerizing.md
+++ b/docs/sources/userguide/dockerizing.md
@@ -13,7 +13,7 @@ application inside a container takes a single command: `docker run`.
 
 Let's try it now.
 
-    $ sudo docker run ubuntu:14.04 /bin/echo 'Hello World!'
+    $ sudo docker run ubuntu:14.04 /bin/echo 'Hello World'
     Hello World!
 
 And you just launched your first container!