diff --git a/modules/renderer/map.js b/modules/renderer/map.js
index 58e71131c..177fc6b42 100644
--- a/modules/renderer/map.js
+++ b/modules/renderer/map.js
@@ -511,8 +511,10 @@ export function rendererMap(context) {
     };
 
 
+    // returns Lng/Lat
     map.mouseCoordinates = function() {
-        return projection.invert(map.mouse());
+        var coord = map.mouse() || pxCenter();
+        return projection.invert(coord);
     };