@@ -55,12 +55,12 @@
 	OFString *_fileName;
 	uint32_t _mode;
 	uint64_t _size, _toRead;
 	OFDate *_modificationDate;
 	of_tar_archive_entry_type_t _type;
-	OFString *_targetFileName;
-	OFString *_owner, *_group;
+	OFString *_Nullable _targetFileName;
+	OFString *_Nullable _owner, *_Nullable _group;
 	uint32_t _deviceMajor, _deviceMinor;
 }
 
 /*!
  * The file name of the entry.