diff --git a/lib/torque/leaflet/torque.js b/lib/torque/leaflet/torque.js
index 1439e16..23310ff 100644
--- a/lib/torque/leaflet/torque.js
+++ b/lib/torque/leaflet/torque.js
@@ -343,7 +343,7 @@ L.TorqueLayer = L.CanvasLayer.extend({
       pos = this.getTilePos(tile.coord);
       xx = x - pos.x;
       yy = y - pos.y;
-      if (xx >= 0 && yy >= 0 && xx <= 256 && yy <= 256) {
+      if (xx >= 0 && yy >= 0 && xx < this.renderer.TILE_SIZE && yy <= this.renderer.TILE_SIZE) {
         value = this.renderer.getValueFor(tile, step, xx, yy);
       }
       if (value !== null) {