diff --git a/src/serialize.js b/src/serialize.js
index 36127ab6..76f6b4e6 100644
--- a/src/serialize.js
+++ b/src/serialize.js
@@ -1,6 +1,6 @@
 // @ts-check
 var objToString = Object.prototype.toString;
-var objKeys = Object.getOwnPropertyNames;
+var objKeys = Object.keys;
 
 /**
  * A custom Babel options serializer