diff --git a/best_practices/templates.rst b/best_practices/templates.rst
index d47c6a1c48d..801646587b2 100644
--- a/best_practices/templates.rst
+++ b/best_practices/templates.rst
@@ -153,7 +153,7 @@ name is irrelevant because you never use it in your own code):
         app.twig.app_extension:
             class:     AppBundle\Twig\AppExtension
             arguments: ["@markdown"]
-            public: false
+            public:    false
             tags:
                 - { name: twig.extension }