diff --git a/app/assets/javascripts/old_design/carte/carte.js b/app/assets/javascripts/old_design/carte/carte.js
index f05fba794..1ae2bb8ee 100644
--- a/app/assets/javascripts/old_design/carte/carte.js
+++ b/app/assets/javascripts/old_design/carte/carte.js
@@ -2,7 +2,7 @@ var LON = '2.428462';
 var LAT = '46.538192';
 
 function initCarto() {
-  OSM = L.tileLayer("http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
+  OSM = L.tileLayer("https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
     attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
   });