@@ -174,7 +174,7 @@ func (ld *v2LayerDescriptor) Download(ctx context.Context, progressOutput progre

 			return nil, 0, xfer.DoNotRetry{Err: err}

 		}

 	} else {

-		offset, err = ld.tmpFile.Seek(0, os.SEEK_END)

+		offset, err = ld.tmpFile.Seek(0, io.SeekEnd)

 		if err != nil {

 			logrus.Debugf("error seeking to end of download file: %v", err)

 			offset = 0

@@ -209,7 +209,7 @@ func (ld *v2LayerDescriptor) Download(ctx context.Context, progressOutput progre

 			return nil, 0, err

 		}

 	}

-	size, err := layerDownload.Seek(0, os.SEEK_END)

+	size, err := layerDownload.Seek(0, io.SeekEnd)

 	if err != nil {

 		// Seek failed, perhaps because there was no Content-Length

 		// header. This shouldn't fail the download, because we can