diff --git a/lib/rules_core/normalize.js b/lib/rules_core/normalize.js
index 810657e..68fb392 100644
--- a/lib/rules_core/normalize.js
+++ b/lib/rules_core/normalize.js
@@ -3,8 +3,8 @@
 'use strict';
 
 
-var NEWLINES_RE  = /\r[\n\u0085]?|[\u2424\u2028\u0085]/g;
-var NULL_RE      = /\u0000/g;
+var NEWLINES_RE  = /\r[\n\x85]?|[\u2424\x85]/g;
+var NULL_RE      = /\0/g;
 
 
 module.exports = function normalize(state) {