diff --git a/source/_includes/custom/after_footer.html b/source/_includes/custom/after_footer.html
index 705acfe..0b5d74e 100644
--- a/source/_includes/custom/after_footer.html
+++ b/source/_includes/custom/after_footer.html
@@ -1,7 +1,7 @@
 <!-- Piwik -->
 <script type="text/javascript">
-var pkBaseURL = (("https:" == document.location.protocol) ? "https://piwik.higgsboson.tk/" : "http://piwik.higgsboson.tk/");
-document.write(unescape("%3Cscript src='" + pkBaseURL + "piwik.js' type='text/javascript'%3E%3C/script%3E"));
+var pkBaseURL = (window.location.indexOf("https://") == 0 ? "https://piwik.higgsboson.tk/" : "http://piwik.higgsboson.tk/");
+document.write(unescape("%3Cscript src='" + pkBaseURL + "' type='text/javascript'%3E%3C/script%3E"));
 </script><script type="text/javascript">
 try {
 var piwikTracker = Piwik.getTracker(pkBaseURL + "piwik.php", 1);
diff --git a/source/_includes/custom/head.html b/source/_includes/custom/head.html
index cda3609..b28b708 100644
--- a/source/_includes/custom/head.html
+++ b/source/_includes/custom/head.html
@@ -5,7 +5,7 @@
         var s = document.createElement('script'), t = document.getElementsByTagName('script')[0];
         s.type = 'text/javascript';
         s.async = true;
-        s.src = 'http://api.flattr.com/js/0.6/load.js?mode=auto';
+        s.src = '//api.flattr.com/js/0.6/load.js?mode=auto';
         t.parentNode.insertBefore(s, t);
     })();
 /* ]]> */
diff --git a/source/downloads/code/flattr/head.html b/source/downloads/code/flattr/head.html
index 242fc28..91b61e5 100644
--- a/source/downloads/code/flattr/head.html
+++ b/source/downloads/code/flattr/head.html
@@ -5,7 +5,7 @@
         var s = document.createElement('script'), t = document.getElementsByTagName('script')[0];
         s.type = 'text/javascript';
         s.async = true;
-        s.src = 'http://api.flattr.com/js/0.6/load.js?mode=auto';
+        s.src = '//api.flattr.com/js/0.6/load.js?mode=auto';
         t.parentNode.insertBefore(s, t);
     })();
 /* ]]> */
diff --git a/source/downloads/code/flattr/head2.html b/source/downloads/code/flattr/head2.html
index f8dd9fd..f9ce920 100644
--- a/source/downloads/code/flattr/head2.html
+++ b/source/downloads/code/flattr/head2.html
@@ -5,7 +5,7 @@
         var s = document.createElement('script'), t = document.getElementsByTagName('script')[0];
         s.type = 'text/javascript';
         s.async = true;
-        s.src = 'http://api.flattr.com/js/0.6/load.js?mode=auto';
+        s.src = '//api.flattr.com/js/0.6/load.js?mode=auto';
         t.parentNode.insertBefore(s, t);
     })();
 /* ]]> */