diff --git a/components/fs/vfs/vfs_fs.c b/components/fs/vfs/vfs_fs.c
index 37f42f5e..2b6d36e6 100644
--- a/components/fs/vfs/vfs_fs.c
+++ b/components/fs/vfs/vfs_fs.c
@@ -683,6 +683,7 @@ static DIR *VfsOpendir(const char *path)
         mp->mRefs++;
     } else {
         free(dir);
+        dir = NULL;
     }
 
     VfsUnlock();