diff --git a/models/issues/issue_update.go b/models/issues/issue_update.go
index 7ddf7ee9017e0..ec323f381bc04 100644
--- a/models/issues/issue_update.go
+++ b/models/issues/issue_update.go
@@ -14,7 +14,6 @@ import (
 	access_model "code.gitea.io/gitea/models/perm/access"
 	project_model "code.gitea.io/gitea/models/project"
 	repo_model "code.gitea.io/gitea/models/repo"
-	system_model "code.gitea.io/gitea/models/system"
 	"code.gitea.io/gitea/models/unit"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/git"
@@ -816,37 +815,13 @@ func DeleteIssuesByRepoID(ctx context.Context, repoID int64) (attachmentPaths []
 	return attachmentPaths, err
 }
 
-// DeleteOrphanedIssues delete issues without a repo
-func DeleteOrphanedIssues(ctx context.Context) error {
-	var attachmentPaths []string
-	err := db.WithTx(ctx, func(ctx context.Context) error {
-		var ids []int64
-
-		if err := db.GetEngine(ctx).Table("issue").Distinct("issue.repo_id").
-			Join("LEFT", "repository", "issue.repo_id=repository.id").
-			Where(builder.IsNull{"repository.id"}).GroupBy("issue.repo_id").
-			Find(&ids); err != nil {
-			return err
-		}
-
-		for i := range ids {
-			paths, err := DeleteIssuesByRepoID(ctx, ids[i])
-			if err != nil {
-				return err
-			}
-			attachmentPaths = append(attachmentPaths, paths...)
-		}
-
-		return nil
-	})
-	if err != nil {
-		return err
-	}
-
-	// Remove issue attachment files.
-	for i := range attachmentPaths {
-		// FIXME: it's not right, because the attachment might not be on local filesystem
-		system_model.RemoveAllWithNotice(ctx, "Delete issue attachment", attachmentPaths[i])
+func GetOrphanedIssueRepoIDs(ctx context.Context) ([]int64, error) {
+	var repoIDs []int64
+	if err := db.GetEngine(ctx).Table("issue").Distinct("issue.repo_id").
+		Join("LEFT", "repository", "issue.repo_id=repository.id").
+		Where(builder.IsNull{"repository.id"}).
+		Find(&repoIDs); err != nil {
+		return nil, err
 	}
-	return nil
+	return repoIDs, nil
 }
diff --git a/services/doctor/dbconsistency.go b/services/doctor/dbconsistency.go
index 62326ed07c865..d5a133d8b2527 100644
--- a/services/doctor/dbconsistency.go
+++ b/services/doctor/dbconsistency.go
@@ -15,6 +15,7 @@ import (
 	secret_model "code.gitea.io/gitea/models/secret"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
+	issue_service "code.gitea.io/gitea/services/issue"
 )
 
 type consistencyCheck struct {
@@ -93,7 +94,7 @@ func prepareDBConsistencyChecks() []consistencyCheck {
 			// find issues without existing repository
 			Name:    "Orphaned Issues without existing repository",
 			Counter: issues_model.CountOrphanedIssues,
-			Fixer:   asFixer(issues_model.DeleteOrphanedIssues),
+			Fixer:   asFixer(issue_service.DeleteOrphanedIssues),
 		},
 		// find releases without existing repository
 		genericOrphanCheck("Orphaned Releases without existing repository",
diff --git a/services/issue/issue.go b/services/issue/issue.go
index 455a1ec29781b..ecbbf1148182b 100644
--- a/services/issue/issue.go
+++ b/services/issue/issue.go
@@ -323,3 +323,32 @@ func deleteIssue(ctx context.Context, issue *issues_model.Issue) error {
 
 	return committer.Commit()
 }
+
+// DeleteOrphanedIssues delete issues without a repo
+func DeleteOrphanedIssues(ctx context.Context) error {
+	var attachmentPaths []string
+	err := db.WithTx(ctx, func(ctx context.Context) error {
+		repoIDs, err := issues_model.GetOrphanedIssueRepoIDs(ctx)
+		if err != nil {
+			return err
+		}
+		for i := range repoIDs {
+			paths, err := issues_model.DeleteIssuesByRepoID(ctx, repoIDs[i])
+			if err != nil {
+				return err
+			}
+			attachmentPaths = append(attachmentPaths, paths...)
+		}
+
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	// Remove issue attachment files.
+	for i := range attachmentPaths {
+		system_model.RemoveStorageWithNotice(ctx, storage.Attachments, "Delete issue attachment", attachmentPaths[i])
+	}
+	return nil
+}