diff --git a/src/adapters/criteo.js b/src/adapters/criteo.js
index eb1c522350a..925aa84038f 100644
--- a/src/adapters/criteo.js
+++ b/src/adapters/criteo.js
@@ -4,7 +4,8 @@ var adloader = require('../adloader');
 
 var CriteoAdapter = function CriteoAdapter() {
 
-  var _publisherTagUrl = window.location.protocol + '//static.criteo.net/js/ld/publishertag.js';
+  var sProt = (window.location.protocol==='http:') ? 'http:' : 'https:';
+  var _publisherTagUrl = sProt + '//static.criteo.net/js/ld/publishertag.js';
   var _bidderCode = 'criteo';
   var _profileId = 125;