diff --git a/lib/OpenLayers/StyleMap.js b/lib/OpenLayers/StyleMap.js
index 3a1c9ff920..88f33a5bbf 100644
--- a/lib/OpenLayers/StyleMap.js
+++ b/lib/OpenLayers/StyleMap.js
@@ -134,11 +134,14 @@ OpenLayers.StyleMap = OpenLayers.Class({
     addUniqueValueRules: function(renderIntent, property, symbolizers) {
         var rules = [];
         for (var value in symbolizers) {
-            rules.push(new OpenLayers.Rule.Comparison({
-                type: OpenLayers.Rule.Comparison.EQUAL_TO,
-                property: property,
-                value: value,
-                symbolizer: symbolizers[value]}));
+            rules.push(new OpenLayers.Rule({
+                symbolizer: symbolizers[value],
+                filter: new OpenLayers.Filter.Comparison({
+                    type: OpenLayers.Filter.Comparison.EQUAL_TO,
+                    property: property,
+                    value: value
+                })
+            }));
         }
         this.styles[renderIntent].addRules(rules);
     },