diff --git a/README.md b/README.md
index fe21f7e..ae7b3fd 100644
--- a/README.md
+++ b/README.md
@@ -14,9 +14,6 @@ specification for hosting profile images tied to email or OpenID addresses.
 * Variable image size (`s` or `size`)
 * Default fallbacks (`d` or `default`): 404, URL, mp/mm, identicon
 
-Clients are asked to cache results for up to 1 day to reduce load. This can
-apply to negative results as well.
-
 The API is explained in greater detail at the
 [Libravar wiki](https://wiki.libravatar.org/api/).