diff --git a/lib/Doctrine/Hydrate.php b/lib/Doctrine/Hydrate.php
index 5a213cdeb..829e0b33f 100644
--- a/lib/Doctrine/Hydrate.php
+++ b/lib/Doctrine/Hydrate.php
@@ -640,7 +640,7 @@ class Doctrine_Hydrate implements Serializable
     	if ($this->_cache) {
             $dql  = $this->getDql();
             // calculate hash for dql query
-            $hash = strlen($dql) . md5($dql);
+            $hash = strlen($dql) . md5($dql . var_export($params, true));
 
             $cached = $this->_cache->fetch($hash);
 
diff --git a/tests/Query/CacheTestCase.php b/tests/Query/CacheTestCase.php
index d0a566986..fee6d3674 100644
--- a/tests/Query/CacheTestCase.php
+++ b/tests/Query/CacheTestCase.php
@@ -70,5 +70,25 @@ class Doctrine_Query_Cache_TestCase extends Doctrine_UnitTestCase
         $this->assertTrue($coll instanceof Doctrine_Collection);
         $this->assertEqual($coll->count(), 8);
     }
+    public function testResultSetCacheSupportsPreparedStatements()
+    {
+        $q = new Doctrine_Query();
 
+        $cache = new Doctrine_Cache_Array();
+        $q->setCache($cache);
+        $q->select('u.name')->from('User u')->leftJoin('u.Phonenumber p')
+          ->where('u.id = ?');
+
+        $coll = $q->execute(array(5));
+
+        $this->assertEqual($cache->count(), 1);
+        $this->assertTrue($coll instanceof Doctrine_Collection);
+        $this->assertEqual($coll->count(), 1);
+
+        $coll = $q->execute(array(5));
+
+        $this->assertEqual($cache->count(), 1);
+        $this->assertTrue($coll instanceof Doctrine_Collection);
+        $this->assertEqual($coll->count(), 1);
+    }
 }