diff --git a/cmd/dashboard/controller/notification_group.go b/cmd/dashboard/controller/notification_group.go
index 8f5eef6..0569b4f 100644
--- a/cmd/dashboard/controller/notification_group.go
+++ b/cmd/dashboard/controller/notification_group.go
@@ -168,7 +168,7 @@ func updateNotificationGroup(c *gin.Context) (any, error) {
 	ngf.Notifications = slices.Compact(ngf.Notifications)
 
 	var count int64
-	if err := singleton.DB.Model(&model.Server{}).Where("id in (?)", ngf.Notifications).Count(&count).Error; err != nil {
+	if err := singleton.DB.Model(&model.Notification{}).Where("id in (?)", ngf.Notifications).Count(&count).Error; err != nil {
 		return nil, newGormError("%v", err)
 	}
 	if count != int64(len(ngf.Notifications)) {
diff --git a/model/alertrule.go b/model/alertrule.go
index b505cf5..a26e79f 100644
--- a/model/alertrule.go
+++ b/model/alertrule.go
@@ -85,8 +85,8 @@ func (r *AlertRule) Check(points [][]bool) (maxDuration int, passed bool) {
 			if maxDuration < 1 {
 				maxDuration = 1
 			}
-			for j := len(points[i]) - 1; j >= 0; j-- {
-				if !points[i][j] {
+			for j := len(points) - 1; j >= 0; j-- {
+				if !points[j][i] {
 					failCount++
 					break
 				}