diff --git a/fs/sync/sync.go b/fs/sync/sync.go
index e0a3e23ac..7feedfcd7 100644
--- a/fs/sync/sync.go
+++ b/fs/sync/sync.go
@@ -726,7 +726,7 @@ func (s *syncCopyMove) markParentNotEmpty(entry fs.DirEntry) {
 				parentDir = ""
 			}
 			delete(s.srcEmptyDirs, parentDir)
-			if parentDir == "" {
+			if parentDir == "" || parentDir == "/" {
 				break
 			}
 			parentDir = path.Dir(parentDir)