diff --git a/lib/Doctrine/Collection.php b/lib/Doctrine/Collection.php
index d9f8ad670..0c72cac91 100644
--- a/lib/Doctrine/Collection.php
+++ b/lib/Doctrine/Collection.php
@@ -169,6 +169,7 @@ class Doctrine_Collection extends Doctrine_Access implements Countable, Iterator
 
         $this->_table = $connection->getTable($this->_table);
 
+        $keyColumn = isset($array['keyColumn']) ? $array['keyColumn'] : null;
         if ($keyColumn === null) {
             $keyColumn = $this->_table->getBoundQueryPart('indexBy');
         }