diff --git a/CHANGELOG b/CHANGELOG
index 2b07457..11c52ca 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+* Fix Selector to match elements with attributes containing hyphens. [#285 state:resolved] (leiyou, jddalton, kangax)
+
 * Make sure Form.reset always returns a reference to the receiver element. [#309 state:resolved] (Phil, kangax)
 
 * Escape ":" and "." characters when doing contextual CSS selection in browsers that support querySelectorAll. [#559 state:resolved] (fxtentacle, Andrew Dupont)
diff --git a/src/dom/selector.js b/src/dom/selector.js
index 331299d..158877c 100644
--- a/src/dom/selector.js
+++ b/src/dom/selector.js
@@ -340,7 +340,7 @@ Object.extend(Selector, {
     { name: 'id',           re: /^#([\w\-\*]+)(\b|$)/ },
     { name: 'className',    re: /^\.([\w\-\*]+)(\b|$)/ },
     { name: 'pseudo',       re: /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/ },
-    { name: 'attrPresence', re: /^\[((?:[\w]+:)?[\w]+)\]/ },
+    { name: 'attrPresence', re: /^\[((?:[\w-]+:)?[\w]+)\]/ },
     { name: 'attr',         re: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/ }
   ],
   
diff --git a/test/unit/fixtures/selector.html b/test/unit/fixtures/selector.html
index d745c8f..cad88a6 100644
--- a/test/unit/fixtures/selector.html
+++ b/test/unit/fixtures/selector.html
@@ -66,4 +66,6 @@
     <input type="hidden" id="commaTwo" name="foo2" value="oops" />
   </form>
   <div id="counted_container"><div class="is_counted"></div></div>
+  
+  <div foo-bar="baz" id="attr_with_dash">blah</div>
 </div>
diff --git a/test/unit/selector_test.js b/test/unit/selector_test.js
index 519dd98..c756fbe 100644
--- a/test/unit/selector_test.js
+++ b/test/unit/selector_test.js
@@ -87,6 +87,10 @@ new Test.Unit.Runner({
     this.assertEnumEqual($$('#troubleForm *[type]'), $$('#troubleForm [type]'));
   },
   
+  testSelectorWithAttributeContainingDash: function() {
+    this.assertEnumEqual([$('attr_with_dash')], $$('[foo-bar]'));
+  },                                                            
+  
   testSelectorWithUniversalAndHyphenTokenizedAttributeValue: function() {
     this.assertEnumEqual([$('item_3')], $$('*[xml:lang|="es"]'));
     this.assertEnumEqual([$('item_3')], $$('*[xml:lang|="ES"]'));