diff --git a/server/channelserver/handlers_diva.go b/server/channelserver/handlers_diva.go
index 1867bfacd..2c60e9767 100644
--- a/server/channelserver/handlers_diva.go
+++ b/server/channelserver/handlers_diva.go
@@ -72,7 +72,7 @@ func handleMsgMhfGetUdSchedule(s *Session, p mhfpacket.MHFPacket) {
 	var timestamps []uint32
 	if s.server.erupeConfig.DevMode && s.server.erupeConfig.DevModeOptions.DivaEvent >= 0 {
 		if s.server.erupeConfig.DevModeOptions.DivaEvent == 0 {
-			if s.server.erupeConfig.RealClientMode <= _config.Z1 {
+			if s.server.erupeConfig.RealClientMode >= _config.Z2 {
 				doAckBufSucceed(s, pkt.AckHandle, make([]byte, 32))
 			} else {
 				doAckBufSucceed(s, pkt.AckHandle, make([]byte, 36))
@@ -84,7 +84,7 @@ func handleMsgMhfGetUdSchedule(s *Session, p mhfpacket.MHFPacket) {
 		timestamps = generateDivaTimestamps(s, start, false)
 	}
 
-	if s.server.erupeConfig.RealClientMode <= _config.Z1 {
+	if s.server.erupeConfig.RealClientMode >= _config.Z2 {
 		bf.WriteUint32(id)
 	}
 	for i := range timestamps {