diff --git a/docs/topics/cache.txt b/docs/topics/cache.txt
index 03afa86647..d0bd9f6992 100644
--- a/docs/topics/cache.txt
+++ b/docs/topics/cache.txt
@@ -595,7 +595,8 @@ the ``cache`` template tag. To give your template access to this tag, put
 
 The ``{% cache %}`` template tag caches the contents of the block for a given
 amount of time. It takes at least two arguments: the cache timeout, in seconds,
-and the name to give the cache fragment. For example:
+and the name to give the cache fragment. The name will be taken as is, do not
+use a variable. For example:
 
 .. code-block:: html+django