diff --git a/doc/snac.5 b/doc/snac.5
index e0cc9c2..c460c7b 100644
--- a/doc/snac.5
+++ b/doc/snac.5
@@ -46,6 +46,9 @@ Strings in the format @user@host are requested using the Webfinger
 protocol and converted to links and mentions if something reasonable
 is found.
 .It Emoticons / Smileys / Silly Symbols
+(Note: from version 2.51, these symbols are configurable by the
+instance administrator, so the available ones may differ).
+.Pp
 The following traditional ASCII emoticons or special strings are
 converted to related emojis:
 .Bd -literal