diff --git a/lib/OpenLayers/Layer/Markers.js b/lib/OpenLayers/Layer/Markers.js
index 09a262a348..de7917f78e 100644
--- a/lib/OpenLayers/Layer/Markers.js
+++ b/lib/OpenLayers/Layer/Markers.js
@@ -104,7 +104,7 @@ OpenLayers.Layer.Markers = OpenLayers.Class(OpenLayers.Layer, {
     addMarker: function(marker) {
         this.markers.push(marker);
 
-        if (this.opacity != null) {
+        if (this.opacity < 1) {
             marker.setOpacity(this.opacity);
         }
 
diff --git a/lib/OpenLayers/Tile/Image.js b/lib/OpenLayers/Tile/Image.js
index 0351c08594..b195ac0ab3 100644
--- a/lib/OpenLayers/Tile/Image.js
+++ b/lib/OpenLayers/Tile/Image.js
@@ -391,7 +391,7 @@ OpenLayers.Tile.Image = OpenLayers.Class(OpenLayers.Tile, {
             this.frame.appendChild(this.imgDiv); 
             this.layer.div.appendChild(this.frame); 
 
-            if(this.layer.opacity != null) {
+            if(this.layer.opacity < 1) {
 
                 OpenLayers.Util.modifyDOMElement(this.imgDiv, null, null, null,
                                                  null, null, null,