diff --git a/lib/OpenLayers/Popup.js b/lib/OpenLayers/Popup.js
index f7e82c02ed..d11c108ea3 100644
--- a/lib/OpenLayers/Popup.js
+++ b/lib/OpenLayers/Popup.js
@@ -7,7 +7,7 @@ OpenLayers.Popup.count = 0;
 OpenLayers.Popup.PX = new OpenLayers.Pixel(0, 0);
 OpenLayers.Popup.SIZE = new OpenLayers.Size(200, 200);
 OpenLayers.Popup.COLOR = "white";
-OpenLayers.Popup.OPACITY = 0.5;
+OpenLayers.Popup.OPACITY = 1;
 OpenLayers.Popup.BORDER = "0px";
 
 OpenLayers.Popup.prototype = {