diff --git a/offlineimap.conf b/offlineimap.conf
index 56d393c..91dfab7 100644
--- a/offlineimap.conf
+++ b/offlineimap.conf
@@ -889,10 +889,9 @@ remoteuser = username
 # Note that the IMAP 4rev1 specification (RFC 3501) allows both UTF-8 and
 # modified UTF-7 folder names.
 #
-# This option is disabled by default to retain compatibility with older versions
-# of offlineimap.
-#
-# This option is EXPERIMENTAL.
+# WARNING: with this option enabled:
+# - compatibility with any other version is NOT GUARANTED (including newer);
+# - no support is provided.
 #
 #decodefoldernames = no