diff --git a/lib/backup/actions/util.go b/lib/backup/actions/util.go
index d82c1a3b0c..046ff921ed 100644
--- a/lib/backup/actions/util.go
+++ b/lib/backup/actions/util.go
@@ -198,7 +198,7 @@ func NewRemoteFS(path string) (common.RemoteFS, error) {
 			return nil, fmt.Errorf("dir must be absolute; got %q", dir)
 		}
 		fs := &fsremote.FS{
-			Dir: dir,
+			Dir: filepath.Clean(dir),
 		}
 		return fs, nil
 	case "gcs", "gs":