diff --git a/index.php.template.txt b/index.php.template.txt
index 9ba159d6c..4db1a2d95 100644
--- a/index.php.template.txt
+++ b/index.php.template.txt
@@ -152,8 +152,13 @@ if (!$psim) {
 <?php } else { ?>
   _gaq.push(['_setDomainName', 'psim.us']);
 <?php } ?>
+  _gaq.push(['_setAllowLinker', true]);
   _gaq.push(['_trackPageview']);
-
+  if (window.history && history.replaceState && location.search.match(/__utm/)) {
+    _gaq.push(function() {
+      history.replaceState(null, '', location.pathname);
+    });
+  }
   (function() {
     var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
     ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';