diff --git a/routers/repo/attachment.go b/routers/repo/attachment.go
index bc843c555..9de16ba2d 100755
--- a/routers/repo/attachment.go
+++ b/routers/repo/attachment.go
@@ -512,6 +512,10 @@ func GetSuccessChunks(ctx *context.Context) {
 			return
 		}
 	} else {
+		oldAttachment, _ := models.GetAttachmentByUUID(fileChunk.UUID)
+		if oldAttachment != nil {
+			fileName = oldAttachment.Name
+		}
 		isExist, err = storage.ObsHasObject(setting.BasePath + models.AttachmentRelativePath(fileChunk.UUID) + "/" + fileName)
 		if err != nil {
 			ctx.ServerError("ObsHasObject failed", err)