diff --git a/mozilla/js/narcissus/jsexec.js b/mozilla/js/narcissus/jsexec.js
index 01043025730..5488b2d42e1 100644
--- a/mozilla/js/narcissus/jsexec.js
+++ b/mozilla/js/narcissus/jsexec.js
@@ -134,7 +134,7 @@ var global = {
     Math: Math,
 
     // Extensions to ECMA.
-    snarf: snarf,
+    snarf: snarf, evaluate: evaluate,
     load: function load(s) {
         if (typeof s != "string")
             return s;