diff --git a/pkgdown/extra.js b/pkgdown/extra.js
index dfbe2aa..48494e8 100644
--- a/pkgdown/extra.js
+++ b/pkgdown/extra.js
@@ -1,15 +1,16 @@
-<!-- Matomo -->
 var _paq = window._paq = window._paq || [];
 /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
 _paq.push(["setDocumentTitle", document.domain + "/" + document.title]);
 _paq.push(['trackPageView']);
 _paq.push(['enableLinkTracking']);
 (function() {
-var u="https://piwik.cebitec.uni-bielefeld.de/";
-_paq.push(['setTrackerUrl', u+'matomo.php']);
-_paq.push(['setSiteId', '24']);
-var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
-g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+    var u = "https://piwik.cebitec.uni-bielefeld.de/";
+    _paq.push(['setTrackerUrl', u + 'matomo.php']);
+    _paq.push(['setSiteId', '24']);
+    var d = document,
+        g = d.createElement('script'),
+        s = d.getElementsByTagName('script')[0];
+    g.async = true;
+    g.src = u + 'matomo.js';
+    s.parentNode.insertBefore(g, s);
 })();
-<!-- End Matomo Code -->
-