diff --git a/app/views/root/_google_analytics.html.erb b/app/views/root/_google_analytics.html.erb
index 95b5df949..7434c4fa9 100644
--- a/app/views/root/_google_analytics.html.erb
+++ b/app/views/root/_google_analytics.html.erb
@@ -1,5 +1,7 @@
 <script id="ga-params">
-  var GOVUK=GOVUK||{},_gaq=_gaq||[];GOVUK.Analytics=GOVUK.Analytics||{};
+  window.GOVUK = window.GOVUK || {};
+  window._gaq = window._gaq || [];
+  GOVUK.Analytics = GOVUK.Analytics || {};
   <%#
     Slimmer inserts custom variables here
     https://github.com/alphagov/slimmer/blob/master/lib/slimmer/processors/google_analytics_configurator.rb