diff --git a/html/layers.js b/html/layers.js
index b494276e..a9d2537c 100644
--- a/html/layers.js
+++ b/html/layers.js
@@ -100,28 +100,36 @@ function createBaseLayers() {
     }));
 
     if (1) {
-        let openfreemap = new ol.layer.VectorTile({
+        world.push(new ol.layer.VectorTile({
             type: 'base',
             name: 'OpenFreeMapLiberty',
             title: 'OpenFreeMap Liberty',
             declutter: true,
-        });
-        // ol-mapbox-style plugin packed in with ol ... (kinda ugly)
-        ol.mapboxStyle.applyStyle(openfreemap, "https://tiles.openfreemap.org/styles/liberty");
-        ol.mapboxStyle.applyBackground(openfreemap, "https://tiles.openfreemap.org/styles/liberty");
-        world.push(openfreemap);
+            onVisible: (layer) => {
+                if (!layer.get('styleApplied')) {
+                    // ol-mapbox-style plugin packed in with ol ... (kinda ugly)
+                    ol.mapboxStyle.applyStyle(layer, "https://tiles.openfreemap.org/styles/liberty");
+                    ol.mapboxStyle.applyBackground(layer, "https://tiles.openfreemap.org/styles/liberty");
+                    layer.set('styleApplied', true);
+                }
+            },
+        }));
     }
     if (1) {
-        let openfreemap = new ol.layer.VectorTile({
+        world.push(new ol.layer.VectorTile({
             type: 'base',
             name: 'OpenFreeMapPositron',
             title: 'OpenFreeMap Positron',
             declutter: true,
-        });
-        // ol-mapbox-style plugin packed in with ol ... (kinda ugly)
-        ol.mapboxStyle.applyStyle(openfreemap, "https://tiles.openfreemap.org/styles/positron");
-        ol.mapboxStyle.applyBackground(openfreemap, "https://tiles.openfreemap.org/styles/positron");
-        world.push(openfreemap);
+            onVisible: (layer) => {
+                if (!layer.get('styleApplied')) {
+                    // ol-mapbox-style plugin packed in with ol ... (kinda ugly)
+                    ol.mapboxStyle.applyStyle(layer, "https://tiles.openfreemap.org/styles/positron");
+                    ol.mapboxStyle.applyBackground(layer, "https://tiles.openfreemap.org/styles/positron");
+                    layer.set('styleApplied', true);
+                }
+            },
+        }));
     }
 
 
diff --git a/html/script.js b/html/script.js
index cc40b7db..5e82d5da 100644
--- a/html/script.js
+++ b/html/script.js
@@ -2501,6 +2501,10 @@ function ol_map_init() {
             if (MapType_tar1090 == lyr.get('name')) {
                 foundType = true;
                 lyr.setVisible(true);
+
+                mapTypeSettings();
+                const onVisible = lyr.get('onVisible');
+                onVisible && onVisible(lyr);
             } else {
                 lyr.setVisible(false);
             }
@@ -2509,6 +2513,8 @@ function ol_map_init() {
                 if (evt.target.getVisible()) {
                     MapType_tar1090 = loStore['MapType_tar1090'] = evt.target.get('name');
                     mapTypeSettings();
+                    const onVisible = lyr.get('onVisible');
+                    onVisible && onVisible(lyr);
                 }
             });
         } else if (lyr.get('type') === 'overlay') {