diff --git a/irc/modes.go b/irc/modes.go
index 355fc436..26af359e 100644
--- a/irc/modes.go
+++ b/irc/modes.go
@@ -171,7 +171,6 @@ const (
 	NoOutside   ChannelMode = 'n' // flag
 	OpOnlyTopic ChannelMode = 't' // flag
 	Persistent  ChannelMode = 'P' // flag
-	ReOp        ChannelMode = 'r' // flag
 	Secret      ChannelMode = 's' // flag
 	UserLimit   ChannelMode = 'l' // flag arg
 )
diff --git a/irc/server.go b/irc/server.go
index 10a17641..20b06adf 100644
--- a/irc/server.go
+++ b/irc/server.go
@@ -175,7 +175,7 @@ func NewServer(config *Config) *Server {
 	server.isupport = NewISupportList()
 	server.isupport.Add("AWAYLEN", strconv.Itoa(server.limits.AwayLen))
 	server.isupport.Add("CASEMAPPING", "rfc7700")
-	server.isupport.Add("CHANMODES", strings.Join([]string{ChannelModes{BanMask, ExceptMask, InviteMask}.String(), "", ChannelModes{UserLimit, Key}.String(), ChannelModes{InviteOnly, Moderated, NoOutside, OpOnlyTopic, Persistent, ReOp, Secret}.String()}, ","))
+	server.isupport.Add("CHANMODES", strings.Join([]string{ChannelModes{BanMask, ExceptMask, InviteMask}.String(), "", ChannelModes{UserLimit, Key}.String(), ChannelModes{InviteOnly, Moderated, NoOutside, OpOnlyTopic, Persistent, Secret}.String()}, ","))
 	server.isupport.Add("CHANNELLEN", strconv.Itoa(config.Limits.ChannelLen))
 	server.isupport.Add("CHANTYPES", "#")
 	server.isupport.Add("EXCEPTS", "")