diff --git a/lib/Doctrine/Import/Builder.php b/lib/Doctrine/Import/Builder.php
index 7bb967ec..4a7150d2 100644
--- a/lib/Doctrine/Import/Builder.php
+++ b/lib/Doctrine/Import/Builder.php
@@ -1073,6 +1073,7 @@ public function buildDefinition(array $definition)
             $extends .= ' implements \Sentry\Serializer\SerializableInterface';
             $setUpCode .= $this->buildToSentry();
         }
+        $setUpCode .= PHP_EOL;
 
         $docs = PHP_EOL . $this->buildPhpDocs($definition);