diff --git a/lib/Doctrine/ORM/EntityRepository.php b/lib/Doctrine/ORM/EntityRepository.php
index de2689db2..1aa2faef7 100644
--- a/lib/Doctrine/ORM/EntityRepository.php
+++ b/lib/Doctrine/ORM/EntityRepository.php
@@ -204,11 +204,6 @@ class EntityRepository implements ObjectRepository
             );
         }
 
-        if ( !isset($arguments[0])) {
-            // we dont even want to allow null at this point, because we cannot (yet) transform it into IS NULL.
-            throw ORMException::findByRequiresParameter($method.$by);
-        }
-
         $fieldName = lcfirst(\Doctrine\Common\Util\Inflector::classify($by));
 
         if ($this->_class->hasField($fieldName) || $this->_class->hasAssociation($fieldName)) {