diff --git a/src/supported.c b/src/supported.c
index 8133d548c..420e07b12 100644
--- a/src/supported.c
+++ b/src/supported.c
@@ -329,7 +329,6 @@ init_isupport(void)
 	add_isupport("STATUSMSG", isupport_string, "@+");
 	add_isupport("CALLERID", isupport_umode, "g");
 	add_isupport("CASEMAPPING", isupport_string, "rfc1459");
-	add_isupport("CHARSET", isupport_string, "ascii");
 	add_isupport("NICKLEN", isupport_nicklen, NULL);
 	add_isupport("MAXNICKLEN", isupport_intptr, &maxnicklen);
 	add_isupport("CHANNELLEN", isupport_intptr, &channellen);