diff --git a/etc/raspberrypios/index.html b/etc/raspberrypios/index.html
index 2ab8047f..d8fa8cfb 100644
--- a/etc/raspberrypios/index.html
+++ b/etc/raspberrypios/index.html
@@ -25,7 +25,7 @@
       var map = L.map('map').setView({lon: 0, lat: 0}, 2);
 
       // add the OpenStreetMap tiles
-      L.tileLayer(`http://${window.location.hostname}:8084/hot/{z}/{x}/{y}.png`, {
+      L.tileLayer(`https://${window.location.hostname}:8084/hot/{z}/{x}/{y}.png`, {
         maxZoom: 19,
         attribution: '&copy; <a href="https://openstreetmap.org/copyright">OpenStreetMap contributors</a>'
       }).addTo(map);