diff --git a/book/http_cache.rst b/book/http_cache.rst
index 46ac1dd1208..8b7661d8a94 100644
--- a/book/http_cache.rst
+++ b/book/http_cache.rst
@@ -384,7 +384,7 @@ This has two very reasonable consequences:
 
 * You should *never* change the state of your application when responding
   to a GET or HEAD request. Even if you don't use a gateway cache, the presence
-  of proxy caches mean that any GET or HEAD request may or may not actually
+  of proxy caches means that any GET or HEAD request may or may not actually
   hit your server;
 
 * Don't expect PUT, POST or DELETE methods to cache. These methods are meant