diff --git a/src/ngircd/irc-mode.c b/src/ngircd/irc-mode.c
index 0c63e727..383c4dee 100644
--- a/src/ngircd/irc-mode.c
+++ b/src/ngircd/irc-mode.c
@@ -673,9 +673,9 @@ Channel_Mode(CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel)
 				    set ? '+' : '-', *mode_ptr,
 				    Client_ID(Origin), Channel_Name(Channel));
 				connected = IRC_WriteStrClient(Origin,
-					ERR_UMODEUNKNOWNFLAG2_MSG,
-					Client_ID(Origin),
-					set ? '+' : '-', *mode_ptr);
+					ERR_UNKNOWNMODE_MSG,
+					Client_ID(Origin), *mode_ptr,
+					Channel_Name(Channel));
 				x[0] = '\0';
 			} else {
 				Log(LOG_DEBUG,
diff --git a/src/ngircd/messages.h b/src/ngircd/messages.h
index f06cf86b..761e36df 100644
--- a/src/ngircd/messages.h
+++ b/src/ngircd/messages.h
@@ -122,7 +122,7 @@
 #define ERR_SECURECHANNEL_MSG		"471 %s %s :Cannot join channel (+z)"
 #define ERR_OPONLYCHANNEL_MSG		"471 %s %s :Cannot join channel (+O)"
 #define ERR_REGONLYCHANNEL_MSG		"471 %s %s :Cannot join channel (+R)"
-#define ERR_UNKNOWNMODE_MSG		"472 %s: %c :is unknown mode char for %s"
+#define ERR_UNKNOWNMODE_MSG		"472 %s %c :is unknown mode char for %s"
 #define ERR_INVITEONLYCHAN_MSG		"473 %s %s :Cannot join channel (+i)"
 #define ERR_BANNEDFROMCHAN_MSG		"474 %s %s :Cannot join channel (+b)"
 #define ERR_BADCHANNELKEY_MSG		"475 %s %s :Cannot join channel (+k)"