diff --git a/index.html b/index.html
index 2fcd726..2243685 100644
--- a/index.html
+++ b/index.html
@@ -65,26 +65,22 @@
             margin: 1rem;
         }
     </style>
-    <!-- Piwik -->
+    <!-- Matomo -->
     <script type="text/javascript">
         var _paq = _paq || [];
-        _paq.push(["setDomains", ["*.www.sp-codes.de"]]);
+        /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
         _paq.push(['trackPageView']);
         _paq.push(['enableLinkTracking']);
-        (function () {
-            var u = "//piwik.sp-codes.de/";
-            _paq.push(['setTrackerUrl', u + 'piwik.php']);
-            _paq.push(['setSiteId', '3']);
-            var d = document, g = d.createElement('script'), s = d.getElementsByTagName('script')[0];
-            g.type = 'text/javascript';
-            g.async = true;
-            g.defer = true;
-            g.src = u + 'piwik.js';
-            s.parentNode.insertBefore(g, s);
+        (function() {
+            var u="//matomo.sp-codes.de/";
+            _paq.push(['setTrackerUrl', u+'piwik.php']);
+            _paq.push(['setSiteId', '2']);
+            var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+            g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'piwik.js'; s.parentNode.insertBefore(g,s);
         })();
     </script>
-    <noscript><p><img src="//piwik.sp-codes.de/piwik.php?idsite=3" style="border:0;" alt=""/></p></noscript>
-    <!-- End Piwik Code -->
+    <noscript><p><img src="//matomo.sp-codes.de/piwik.php?idsite=2&rec=1" style="border:0;" alt="" /></p></noscript>
+    <!-- End Matomo Code -->
 </head>
 <body class="text-center">
 <div id="card">
