diff --git a/commerce_kickstart.install b/commerce_kickstart.install
index 51e8a0b47bcc14c4c9866388f4efac1e6b9478dc..e5b88bdcb54c942438d2b201062d045f140b659e 100644
--- a/commerce_kickstart.install
+++ b/commerce_kickstart.install
@@ -79,7 +79,8 @@ function commerce_kickstart_install_tasks_alter(&$tasks, $install_state) {
     $tasks[$install_state['active_task']]['dfp_settings'] += array(
       'dfp_unit' => 'Kickstart_Install',
     );
-    drupal_add_js('//www.googletagservices.com/tag/js/gpt.js');
+    $prefix = (isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on') ? 'https://' : 'http://';
+    drupal_add_js($prefix . 'www.googletagservices.com/tag/js/gpt.js');
     drupal_add_js(array(
       'dfp' => $tasks[$install_state['active_task']]['dfp_settings'],
     ), 'setting');
diff --git a/modules/commerce_kickstart/commerce_kickstart_dfp/commerce_kickstart_dfp.module b/modules/commerce_kickstart/commerce_kickstart_dfp/commerce_kickstart_dfp.module
index 24c3268a3ddbcc8bc959c45e4243884fea98c8fc..4496cf0d694844968f2d0d976d20ddf2ec959fef 100644
--- a/modules/commerce_kickstart/commerce_kickstart_dfp/commerce_kickstart_dfp.module
+++ b/modules/commerce_kickstart/commerce_kickstart_dfp/commerce_kickstart_dfp.module
@@ -23,7 +23,8 @@ function commerce_kickstart_dfp_page_build(&$page) {
         'dfp_width' => 468,
       );
       drupal_add_css(drupal_get_path('module', 'commerce_kickstart_dfp') . '/theme/commerce_kickstart_dfp.css');
-      drupal_add_js('//www.googletagservices.com/tag/js/gpt.js');
+      $prefix = (isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on') ? 'https://' : 'http://';
+      drupal_add_js($prefix . 'www.googletagservices.com/tag/js/gpt.js');
       drupal_add_js(array(
         'dfp' => $dfp_settings[$current_path],
       ), 'setting');