diff --git a/controller/channel.go b/controller/channel.go
index 3c7402d3..8ad724fd 100644
--- a/controller/channel.go
+++ b/controller/channel.go
@@ -132,7 +132,11 @@ func UpdateChannel(c *gin.Context) {
 		})
 		return
 	}
-	err = channel.Update()
+	if channel.Models == "" {
+		err = channel.Update(false)
+	} else {
+		err = channel.Update(true)
+	}
 	if err != nil {
 		c.JSON(http.StatusOK, gin.H{
 			"success": false,
diff --git a/model/channel.go b/model/channel.go
index 3a68885e..fa033d77 100644
--- a/model/channel.go
+++ b/model/channel.go
@@ -152,7 +152,7 @@ func BatchDelModelChannels(params *BatchChannelsParams) (int64, error) {
 		}
 
 		channel.Models = strings.Join(modelsSlice, ",")
-		channel.Update()
+		channel.Update(false)
 		count++
 	}
 
@@ -190,9 +190,14 @@ func (channel *Channel) Insert() error {
 	return err
 }
 
-func (channel *Channel) Update() error {
+func (channel *Channel) Update(overwrite bool) error {
 	var err error
-	err = DB.Model(channel).Select("*").Omit("UsedQuota").Updates(channel).Error
+
+	if overwrite {
+		err = DB.Model(channel).Select("*").Omit("UsedQuota").Updates(channel).Error
+	} else {
+		err = DB.Model(channel).Omit("UsedQuota").Updates(channel).Error
+	}
 	if err != nil {
 		return err
 	}