diff --git a/Grid/Source/Entity.php b/Grid/Source/Entity.php
index 9452c6c3..3a006e65 100644
--- a/Grid/Source/Entity.php
+++ b/Grid/Source/Entity.php
@@ -14,6 +14,7 @@
 namespace APY\DataGridBundle\Grid\Source;
 
 use APY\DataGridBundle\Grid\Column\Column;
+use APY\DataGridBundle\Grid\Column\JoinColumn;
 use APY\DataGridBundle\Grid\Row;
 use APY\DataGridBundle\Grid\Rows;
 use Doctrine\ORM\Internal\SQLResultCasing;