diff --git a/modules/indexer/issues/indexer.go b/modules/indexer/issues/indexer.go
index df8bfd630..be2d62645 100644
--- a/modules/indexer/issues/indexer.go
+++ b/modules/indexer/issues/indexer.go
@@ -138,26 +138,31 @@ func populateIssueIndexer() {
 		}
 
 		for _, repo := range repos {
-			is, err := models.Issues(&models.IssuesOptions{
-				RepoIDs:  []int64{repo.ID},
-				IsClosed: util.OptionalBoolNone,
-				IsPull:   util.OptionalBoolNone,
-			})
-			if err != nil {
-				log.Error("Issues: %v", err)
-				continue
-			}
-			if err = models.IssueList(is).LoadDiscussComments(); err != nil {
-				log.Error("LoadComments: %v", err)
-				continue
-			}
-			for _, issue := range is {
-				UpdateIssueIndexer(issue)
-			}
+			UpdateRepoIndexer(repo)
 		}
 	}
 }
 
+// UpdateRepoIndexer add/update all issues of the repositories
+func UpdateRepoIndexer(repo *models.Repository) {
+	is, err := models.Issues(&models.IssuesOptions{
+		RepoIDs:  []int64{repo.ID},
+		IsClosed: util.OptionalBoolNone,
+		IsPull:   util.OptionalBoolNone,
+	})
+	if err != nil {
+		log.Error("Issues: %v", err)
+		return
+	}
+	if err = models.IssueList(is).LoadDiscussComments(); err != nil {
+		log.Error("LoadComments: %v", err)
+		return
+	}
+	for _, issue := range is {
+		UpdateIssueIndexer(issue)
+	}
+}
+
 // UpdateIssueIndexer add/update an issue to the issue indexer
 func UpdateIssueIndexer(issue *models.Issue) {
 	var comments []string
diff --git a/modules/notification/indexer/indexer.go b/modules/notification/indexer/indexer.go
index 66614b2c2..606024f39 100644
--- a/modules/notification/indexer/indexer.go
+++ b/modules/notification/indexer/indexer.go
@@ -107,3 +107,8 @@ func (r *indexerNotifier) NotifyIssueChangeContent(doer *models.User, issue *mod
 func (r *indexerNotifier) NotifyIssueChangeTitle(doer *models.User, issue *models.Issue, oldTitle string) {
 	issue_indexer.UpdateIssueIndexer(issue)
 }
+
+func (r *indexerNotifier) NotifyMigrateRepository(doer *models.User, u *models.User, repo *models.Repository) {
+	issue_indexer.UpdateRepoIndexer(repo)
+	models.UpdateRepoIndexer(repo)
+}