diff --git a/src/supported.c b/src/supported.c
index 2e08d99..bb563a3 100644
--- a/src/supported.c
+++ b/src/supported.c
@@ -326,7 +326,6 @@ init_isupport(void)
 	add_isupport("STATUSMSG", isupport_string, "@+");
 	add_isupport("CALLERID", isupport_string, "g");
 	add_isupport("CASEMAPPING", isupport_string, "rfc1459");
-	add_isupport("CHARSET", isupport_string, "ascii");
 	add_isupport("NICKLEN", isupport_intptr, &nicklen);
 	add_isupport("CHANNELLEN", isupport_intptr, &channellen);
 	add_isupport("TOPICLEN", isupport_intptr, &topiclen);