diff --git a/modules/notification/action/action.go b/modules/notification/action/action.go
index ba279a3c7..4c40df114 100644
--- a/modules/notification/action/action.go
+++ b/modules/notification/action/action.go
@@ -315,7 +315,7 @@ func (a *actionNotifier) NotifySyncDeleteRef(doer *models.User, repo *models.Rep
 	}
 }
 
-func NotifyUploadAttachment(doer *models.User, repo *models.Repository, attachment *models.Attachment) {
+func (a *actionNotifier) NotifyUploadAttachment(doer *models.User, repo *models.Repository, attachment *models.Attachment) {
 	if err := models.NotifyWatchers(&models.Action{
 		ActUserID: repo.OwnerID,
 		ActUser:   repo.MustOwner(),
diff --git a/modules/notification/notification.go b/modules/notification/notification.go
index 7b0203a5c..3179dd5f9 100644
--- a/modules/notification/notification.go
+++ b/modules/notification/notification.go
@@ -6,6 +6,7 @@ package notification
 
 import (
 	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/notification/action"
 	"code.gitea.io/gitea/modules/notification/base"
 	"code.gitea.io/gitea/modules/notification/indexer"
@@ -39,7 +40,9 @@ func NewContext() {
 
 // NotifyUploadAttachment notifies attachment upload message to notifiers
 func NotifyUploadAttachment(doer *models.User, repo *models.Repository, attachment *models.Attachment) {
+	log.Info("send attachment to db.")
 	for _, notifier := range notifiers {
+		log.Info("send attachment to notifiers.")
 		notifier.NotifyUploadAttachment(doer, repo, attachment)
 	}
 }