@@ -33,11 +33,11 @@
 	enum {
 		OF_TAR_ARCHIVE_MODE_READ,
 		OF_TAR_ARCHIVE_MODE_WRITE,
 		OF_TAR_ARCHIVE_MODE_APPEND
 	} _mode;
-	OF_KINDOF(OFStream *) _lastReturnedStream;
+	OF_KINDOF(OFStream *) _Nullable _lastReturnedStream;
 }
 
 /*!
  * @brief Creates a new OFTarArchive object with the specified stream.
  *