diff --git a/lib/OpenLayers/Layer.js b/lib/OpenLayers/Layer.js
index d796bc06fa..ac6209fb98 100644
--- a/lib/OpenLayers/Layer.js
+++ b/lib/OpenLayers/Layer.js
@@ -647,7 +647,8 @@ OpenLayers.Layer = OpenLayers.Class({
             // determine minResolution
             if (confProps.maxScale != null) {           
                 confProps.minResolution = 
-                    OpenLayers.Util.getResolutionFromScale(confProps.maxScale);
+                    OpenLayers.Util.getResolutionFromScale(confProps.maxScale, 
+                                                           confProps.units);
             } else if ( (confProps.minResolution == "auto") && 
                         (confProps.minExtent != null) ) {
                 var viewSize = this.map.getSize();