diff --git a/templates/index.html b/templates/index.html
index 883e78f..c9aa734 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -44,7 +44,7 @@
                 attribution: '© OpenStreetMap contributors',
                 detectRetina: true,
                 tileSize: 256,
-                maxZoom: 21,
+                maxZoom: 20,
                 maxNativeZoom: 18,
                 //zoomOffset: 1,
             }).addTo(map);