diff --git a/public/js/helpers.js b/public/js/helpers.js
index b522c5358..81cecdae9 100644
--- a/public/js/helpers.js
+++ b/public/js/helpers.js
@@ -1,10 +1,18 @@
 
-Object.keys = Object.keys || function(o) { 
-    var result = []; 
-    for(var name in o) { 
-        if (o.hasOwnProperty(name)) 
-          result.push(name); 
-    } 
-    return result; 
-};
+(function (Object) {
+
+    'use strict';
+
+    Object.keys = Object.keys || function(o) { 
+        var result = []; 
+        for(var name in o) { 
+            if (o.hasOwnProperty(name)) {
+                result.push(name);
+            }
+        } 
+
+        return result; 
+    };
+
+})(Object);