diff --git a/libcxx/include/__filesystem/directory_entry.h b/libcxx/include/__filesystem/directory_entry.h
--- a/libcxx/include/__filesystem/directory_entry.h
+++ b/libcxx/include/__filesystem/directory_entry.h
@@ -254,7 +254,7 @@
 private:
   friend class directory_iterator;
   friend class recursive_directory_iterator;
-  friend class __dir_stream;
+  friend class _LIBCPP_HIDDEN __dir_stream;
 
   enum _CacheType : unsigned char {
     _Empty,