diff --git a/src/DoctrineNullableEmbeddables/Subscriber.php b/src/DoctrineNullableEmbeddables/Subscriber.php
index a5f2db8..fa265c9 100644
--- a/src/DoctrineNullableEmbeddables/Subscriber.php
+++ b/src/DoctrineNullableEmbeddables/Subscriber.php
@@ -11,7 +11,8 @@
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Event\LifecycleEventArgs;
 use Fmasa\DoctrineNullableEmbeddables\Annotations\Nullable;
-
+use function get_class;
+use function strpos;
 
 class Subscriber implements EventSubscriber
 {