diff --git a/doc/source/user_guide/building_an_image.rst b/doc/source/user_guide/building_an_image.rst
index aaf63416..a9edf531 100644
--- a/doc/source/user_guide/building_an_image.rst
+++ b/doc/source/user_guide/building_an_image.rst
@@ -434,7 +434,7 @@ options
 
 Example:
 
-.. code-block: yaml
+.. code-block:: yaml
 
     - lvm:
         name: lvm