diff --git a/doc/source/contributor/capsule.rst b/doc/source/contributor/capsule.rst
index 48d3e83e6..7ac1ca3aa 100644
--- a/doc/source/contributor/capsule.rst
+++ b/doc/source/contributor/capsule.rst
@@ -184,7 +184,7 @@ Describe capsule:
    $ zun capsule-describe <uuid>
    $ zun capsule-describe <capsule-name>
 
-To DO
+TODO
 ---------
 
 `Add security group set to Capsule`