diff --git a/lib/OpenLayers/Map.js b/lib/OpenLayers/Map.js
index 1dd91f9267..6f1c0323f6 100644
--- a/lib/OpenLayers/Map.js
+++ b/lib/OpenLayers/Map.js
@@ -275,6 +275,10 @@ OpenLayers.Map.prototype = {
this.size.w = dim.width;
this.size.h = dim.height;
}
+ if (this.size.w == 0 && this.size.h == 0) {
+ this.size.w = parseInt(this.div.style.width);
+ this.size.h = parseInt(this.div.style.height);
+ }
},
/**
* @return {OpenLayers.LonLat}
diff --git a/tests/test_Layer_WMS.html b/tests/test_Layer_WMS.html
index 94e590bcfc..d58e8a2ba0 100644
--- a/tests/test_Layer_WMS.html
+++ b/tests/test_Layer_WMS.html
@@ -64,6 +64,6 @@
-
+