diff --git a/lib/OpenLayers/Tile.js b/lib/OpenLayers/Tile.js
index bc7c1baf6f..1fba9e057f 100644
--- a/lib/OpenLayers/Tile.js
+++ b/lib/OpenLayers/Tile.js
@@ -213,7 +213,7 @@ OpenLayers.Tile = OpenLayers.Class({
      */
     setBounds: function(bounds) {
         bounds = bounds.clone();
-        if (this.layer.map.baseLayer.wrapDateLine) {
+        if (this.layer.map && this.layer.map.baseLayer.wrapDateLine) {
             var worldExtent = this.layer.map.getMaxExtent();
             bounds = bounds.wrapDateLine(worldExtent);
         }