diff --git a/Documentation/cloud-config.md b/Documentation/cloud-config.md
index 4bd0d8c..cdb6290 100644
--- a/Documentation/cloud-config.md
+++ b/Documentation/cloud-config.md
@@ -130,6 +130,7 @@ Write a unit to disk, automatically starting it.
 coreos:
     units:
       - name: docker-redis.service
+        command: start
         content: |
           [Unit]
           Description=Redis container