diff --git a/docs/ref/settings.txt b/docs/ref/settings.txt
index a95a054838..0caaca5f41 100644
--- a/docs/ref/settings.txt
+++ b/docs/ref/settings.txt
@@ -251,7 +251,7 @@ See the :ref:`cache documentation <cache_versioning>` for more information.
 ``CACHE_MIDDLEWARE_ALIAS``
 --------------------------
 
-Default: ``default``
+Default: ``'default'``
 
 The cache connection to use for the :ref:`cache middleware
 <the-per-site-cache>`.