diff --git a/lib/Doctrine/ORM/UnitOfWork.php b/lib/Doctrine/ORM/UnitOfWork.php
index 4c494831f..c54d97a0b 100644
--- a/lib/Doctrine/ORM/UnitOfWork.php
+++ b/lib/Doctrine/ORM/UnitOfWork.php
@@ -1155,9 +1155,8 @@ class UnitOfWork implements PropertyChangedListener
                 }
 
                 $joinColumns = reset($assoc['joinColumns']);
-                $weight  = (int)empty($joinColumns['nullable']);
 
-                $calc->addDependency($targetClass->name, $class->name, $weight);
+                $calc->addDependency($targetClass->name, $class->name, (int)empty($joinColumns['nullable']));
 
                 // If the target class has mapped subclasses, these share the same dependency.
                 if ( ! $targetClass->subClasses) {