diff --git a/infoscreen/static/html/coffee.html b/infoscreen/static/html/coffee.html
index 8119306..0d00663 100644
--- a/infoscreen/static/html/coffee.html
+++ b/infoscreen/static/html/coffee.html
@@ -1,4 +1,4 @@
 <link rel="stylesheet" href="/static/css/coffee.css">
-<iframe src="http://ka.dy.fi" allowfullscreen=true sandbox="allow-scripts allow-pointer-lock allow-same-origin">
+<iframe src="https://ka.dy.fi" allowfullscreen=true sandbox="allow-scripts allow-pointer-lock allow-same-origin">
   <p>Your browser does not support iframes.</p>
-</iframe>
\ No newline at end of file
+</iframe>