diff --git a/CHANGELOG b/CHANGELOG
index be8280c..86d1a35 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+* Add tests to ensure IE8 properly assigns a class name in the `Element` constructor. [#529 state:resolved] (Riki Fridrich, Andrew Dupont)
+
 * Remove sniffing from `Element` when detecting broken `setAttribute` in IE. [#571 state:resolved] (kangax)
 
 * Remove sniffing from `Element.update` branching in favor of feature detection. [#574 state:resolved] (kangax)
diff --git a/test/unit/dom_test.js b/test/unit/dom_test.js
index 4e02c5f..3b6cd57 100644
--- a/test/unit/dom_test.js
+++ b/test/unit/dom_test.js
@@ -1071,6 +1071,12 @@ new Test.Unit.Runner({
       Element.prototype.fooBar = Prototype.emptyFunction
       this.assertRespondsTo('fooBar', new Element('div'));
     }
+    
+    elWithClassName = new Element('div', { 'className': 'firstClassName' });
+    this.assert(elWithClassName.hasClassName('firstClassName'));
+    
+    elWithClassName = new Element('div', { 'class': 'firstClassName' });
+    this.assert(elWithClassName.hasClassName('firstClassName'));
   },
 
   testElementGetHeight: function() {