diff --git a/data/imagery.json b/data/imagery.json
index 8716aaeca..b1c9998e8 100644
--- a/data/imagery.json
+++ b/data/imagery.json
@@ -38932,6 +38932,107 @@
       "terms_url": "http://data2.loire-atlantique.fr/licences/",
       "terms_text": "Département de Loire-Atlantique"
     },
+    {
+      "id": "Loire_Atlantique-Orthophotos-2016",
+      "name": "Loire-Atlantique - Orthophotos 2016 - 10 cm",
+      "type": "wms",
+      "template": "https://wms-vuduciel2.makina-corpus.net/geoserver/wms?SERVICE=WMS&FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=cg44:ortho44-2016&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
+      "projection": "EPSG:3857",
+      "endDate": "2016-01-01T00:00:00.000Z",
+      "startDate": "2016-01-01T00:00:00.000Z",
+      "zoomExtent": [0, 20],
+      "polygon": [
+        [
+          [-1.48638, 46.87691],
+          [-1.54437, 46.84873],
+          [-1.73468, 46.87246],
+          [-1.89276, 46.94234],
+          [-1.95475, 46.98084],
+          [-2.07067, 47.08521],
+          [-2.2678, 47.12656],
+          [-2.22627, 47.17124],
+          [-2.19217, 47.16914],
+          [-2.19341, 47.25546],
+          [-2.29694, 47.22769],
+          [-2.41658, 47.25336],
+          [-2.54862, 47.28575],
+          [-2.63913, 47.41678],
+          [-2.50573, 47.50812],
+          [-2.31063, 47.53021],
+          [-2.24836, 47.52384],
+          [-2.23223, 47.51499],
+          [-2.12109, 47.54674],
+          [-2.11783, 47.60126],
+          [-2.1001, 47.61123],
+          [-2.09981, 47.62005],
+          [-2.11141, 47.62873],
+          [-2.10055, 47.65141],
+          [-2.08121, 47.66578],
+          [-1.98016, 47.70751],
+          [-1.83077, 47.72419],
+          [-1.67455, 47.72544],
+          [-1.63735, 47.77463],
+          [-1.49601, 47.81752],
+          [-1.49911, 47.84166],
+          [-1.38133, 47.84415],
+          [-1.346, 47.81086],
+          [-1.23007, 47.78587],
+          [-1.21643, 47.75838],
+          [-1.22635, 47.73628],
+          [-1.21086, 47.7317],
+          [-1.18668, 47.73462],
+          [-1.15196, 47.69332],
+          [-1.13151, 47.63654],
+          [-1.09121, 47.6332],
+          [-0.99265, 47.6027],
+          [-0.98459, 47.58598],
+          [-1.0317, 47.55001],
+          [-1.13585, 47.55628],
+          [-1.13275, 47.5161],
+          [-1.0317, 47.51778],
+          [-0.94863, 47.50103],
+          [-0.93686, 47.47715],
+          [-0.93376, 47.43859],
+          [-0.9009, 47.39874],
+          [-0.92694, 47.37482],
+          [-0.97157, 47.35845],
+          [-1.28339, 47.32736],
+          [-1.23379, 47.26093],
+          [-1.20032, 47.26935],
+          [-1.16498, 47.24957],
+          [-1.14143, 47.1763],
+          [-1.1563, 47.15818],
+          [-1.20652, 47.12402],
+          [-1.20838, 47.10968],
+          [-1.15568, 47.10504],
+          [-1.14081, 47.08056],
+          [-1.09431, 47.0717],
+          [-1.09989, 47.03199],
+          [-1.14453, 47.01636],
+          [-1.21582, 47.02904],
+          [-1.26727, 47.06325],
+          [-1.28524, 47.02185],
+          [-1.34972, 47.02397],
+          [-1.33918, 46.969],
+          [-1.3491, 46.94446],
+          [-1.45014, 46.91186],
+          [-1.47504, 46.9176],
+          [-1.48775, 46.93063],
+          [-1.49235, 46.98433],
+          [-1.48644, 46.99943],
+          [-1.49213, 47.02722],
+          [-1.52764, 47.00541],
+          [-1.52961, 46.97252],
+          [-1.50507, 46.94439],
+          [-1.50222, 46.92973],
+          [-1.51142, 46.91371],
+          [-1.48622, 46.89724],
+          [-1.48638, 46.87691]
+        ]
+      ],
+      "terms_url": "http://data2.loire-atlantique.fr/licences/",
+      "terms_text": "© Loire-Atlantique ouverture des données publiques"
+    },
     {
       "id": "Lombardia-Italy-CTR-DBT",
       "name": "Lombardia - Italy (CTR DBT)",
@@ -40343,7 +40444,8 @@
       "id": "Mapbox",
       "name": "Mapbox Satellite",
       "type": "tms",
-      "template": "https://{switch:a,b,c,d}.tiles.mapbox.com/v4/mapbox.satellite/{zoom}/{x}/{y}.jpg?access_token=pk.eyJ1Ijoib3BlbnN0cmVldG1hcCIsImEiOiJjaml5MjVyb3MwMWV0M3hxYmUzdGdwbzE4In0.q548FjhsSJzvXsGlPsFxAQ",
+      "template": "https://{switch:a,b,c,d}.tiles.mapbox.com/v4/mapbox.satellite/{zoom}/{x}/{y}@2x.jpg?access_token=pk.eyJ1Ijoib3BlbnN0cmVldG1hcCIsImEiOiJjaml5MjVyb3MwMWV0M3hxYmUzdGdwbzE4In0.q548FjhsSJzvXsGlPsFxAQ",
+      "tileSize": 512,
       "zoomExtent": [0, 22],
       "terms_url": "https://www.mapbox.com/about/maps",
       "terms_text": "Terms & Feedback",
diff --git a/data/update_imagery.js b/data/update_imagery.js
index fbf604950..4375f5d3f 100644
--- a/data/update_imagery.js
+++ b/data/update_imagery.js
@@ -91,6 +91,13 @@ sources.concat(whitelist).forEach(function(source) {
         template: source.url
     };
 
+
+    // supports 512px tiles
+    if (source.id === 'Mapbox') {
+        im.template = im.template.replace('.jpg', '@2x.jpg');
+        im.tileSize = 512;
+    }
+
     if (source.type === 'wms') {
         im.projection = supportedProjection;
     }
@@ -149,7 +156,7 @@ sources.concat(whitelist).forEach(function(source) {
         im.terms_html = attribution.html;
     }
 
-    ['best', 'default', 'description', 'icon', 'overlay'].forEach(function(a) {
+    ['best', 'default', 'description', 'icon', 'overlay', 'tileSize'].forEach(function(a) {
         if (source[a]) {
             im[a] = source[a];
         }
diff --git a/modules/renderer/tile_layer.js b/modules/renderer/tile_layer.js
index 03af506d6..454e71400 100644
--- a/modules/renderer/tile_layer.js
+++ b/modules/renderer/tile_layer.js
@@ -272,7 +272,8 @@ export function rendererTileLayer(context) {
         _source = _;
         _tileSize = _source.tileSize;
         _cache = {};
-        tiler.tileSize(_source.tileSize).zoomExtent(_source.zoomExtent);
+        // tiler.tileSize(_source.tileSize).zoomExtent(_source.zoomExtent);   // not yet
+        tiler.zoomExtent(_source.zoomExtent);
         return background;
     };