diff --git a/javascript-stringify.js b/javascript-stringify.js
index 9d8a5d6..a273b92 100644
--- a/javascript-stringify.js
+++ b/javascript-stringify.js
@@ -169,6 +169,7 @@
     'number': String,
     'object': String,
     'boolean': String,
+    'symbol': String,
     'undefined': String
   };