diff --git a/lib/OpenLayers/Layer/Markers.js b/lib/OpenLayers/Layer/Markers.js
index b75b263eaf..75eb9a3a9b 100644
--- a/lib/OpenLayers/Layer/Markers.js
+++ b/lib/OpenLayers/Layer/Markers.js
@@ -102,10 +102,12 @@ OpenLayers.Layer.Markers.prototype =
     */
     drawMarker: function(marker) {
         var px = this.map.getLayerPxFromLonLat(marker.lonlat);
-        var markerImg = marker.draw(px);
-        if (!marker.drawn) {
-            this.div.appendChild(markerImg);
-            marker.drawn = true;
+        if (px != null) {
+            var markerImg = marker.draw(px);
+            if (!marker.drawn) {
+                this.div.appendChild(markerImg);
+                marker.drawn = true;
+            }
         }
     },