diff --git a/src/emulator/fs.js b/src/emulator/fs.js
index 3122bc9..e41fa51 100644
--- a/src/emulator/fs.js
+++ b/src/emulator/fs.js
@@ -19,4 +19,6 @@ if (!fs.existsSync('dev'))
     }
 })();
 
+ufs.constants = fs.constants;
+
 module.exports = ufs;
\ No newline at end of file