diff --git a/lib/OpenLayers/Popup.js b/lib/OpenLayers/Popup.js
index 1c2ca8b8af..56e56aea39 100644
--- a/lib/OpenLayers/Popup.js
+++ b/lib/OpenLayers/Popup.js
@@ -81,8 +81,10 @@ OpenLayers.Popup.prototype = {
     * @type DOMElement
     */
     draw: function(px) {
-        if ((px == null) && (this.map != null)) {
-            px = this.map.getLayerPxFromLonLat(this.lonlat);
+        if (px == null) {
+            if ((this.lonlat != null) && (this.map != null)) {
+                px = this.map.getLayerPxFromLonLat(this.lonlat);
+            }
         }
         
         if (this.div == null) {
diff --git a/lib/OpenLayers/Popup/Anchored.js b/lib/OpenLayers/Popup/Anchored.js
index c27569a083..2ee59e9e75 100644
--- a/lib/OpenLayers/Popup/Anchored.js
+++ b/lib/OpenLayers/Popup/Anchored.js
@@ -39,8 +39,10 @@ OpenLayers.Popup.Anchored.prototype =
     * @type DOMElement
     */
     draw: function(px) {
-        if ((px == null) && (this.map != null)) {
-            px = this.map.getLayerPxFromLonLat(this.lonlat);
+        if (px == null) {
+            if ((this.lonlat != null) && (this.map != null)) {
+                px = this.map.getLayerPxFromLonLat(this.lonlat);
+            }
         }
         
         //calculate relative position