diff --git a/app/src/main/assets/cinnabar-style-7.0.1.yaml b/app/src/main/assets/cinnabar-style-7.0.1.yaml
index e6fa9d84ef..426b8842c7 100644
--- a/app/src/main/assets/cinnabar-style-7.0.1.yaml
+++ b/app/src/main/assets/cinnabar-style-7.0.1.yaml
@@ -718,7 +718,9 @@ textures:
 
 sources:
     mapzen:
-        type: TopoJSON #GeoJSON, MVT, TopoJSON
+        type: MVT #GeoJSON, MVT, TopoJSON
+        #binary MVT format is used in StreetComplete as it is recommended for mobile
+        #https://mapzen.com/documentation/vector-tiles/)
         url:  https://tile.mapzen.com/mapzen/vector/v1/all/{z}/{x}/{y}.topojson
         #url: '//tile.dev.mapzen.com/mapzen/vector/v1/all/{z}/{x}/{y}.topojson'
         #url:  //localhost:8080/vector/all/{z}/{x}/{y}.json