diff --git a/webapp/templates/app.js b/webapp/templates/app.js
index 6c1d701..0faa53c 100644
--- a/webapp/templates/app.js
+++ b/webapp/templates/app.js
@@ -111,7 +111,9 @@ function initMap(btn) {
   }
 
   L.tileLayer('https://{s}.tile.openstreetmap.fr/osmfr/{z}/{x}/{y}.png', {
-    attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
+    attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
+    maxNativeZoom: 19,
+    maxZoom: 19
   }).addTo(map);
 
   map.on("zoom move", () => {