diff --git a/lib/Doctrine/ORM/Cache/Persister/Entity/AbstractEntityPersister.php b/lib/Doctrine/ORM/Cache/Persister/Entity/AbstractEntityPersister.php
index 68e5c034d..eae4c8c33 100644
--- a/lib/Doctrine/ORM/Cache/Persister/Entity/AbstractEntityPersister.php
+++ b/lib/Doctrine/ORM/Cache/Persister/Entity/AbstractEntityPersister.php
@@ -27,7 +27,6 @@ use Doctrine\ORM\Cache\CollectionCacheKey;
 use Doctrine\ORM\Cache\TimestampCacheKey;
 use Doctrine\ORM\Cache\QueryCacheKey;
 use Doctrine\ORM\Cache\Persister\CachedPersister;
-use Doctrine\ORM\Cache\CacheException;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\PersistentCollection;
 use Doctrine\ORM\EntityManagerInterface;
diff --git a/lib/Doctrine/ORM/Cache/Persister/Entity/NonStrictReadWriteCachedEntityPersister.php b/lib/Doctrine/ORM/Cache/Persister/Entity/NonStrictReadWriteCachedEntityPersister.php
index d50d8c500..fd296c637 100644
--- a/lib/Doctrine/ORM/Cache/Persister/Entity/NonStrictReadWriteCachedEntityPersister.php
+++ b/lib/Doctrine/ORM/Cache/Persister/Entity/NonStrictReadWriteCachedEntityPersister.php
@@ -20,7 +20,6 @@
 
 namespace Doctrine\ORM\Cache\Persister\Entity;
 
-use Doctrine\Common\Util\ClassUtils;
 use Doctrine\ORM\Cache\EntityCacheKey;
 
 /**
diff --git a/lib/Doctrine/ORM/Utility/PersisterHelper.php b/lib/Doctrine/ORM/Utility/PersisterHelper.php
index 6fe7545ea..ad99a7ea8 100644
--- a/lib/Doctrine/ORM/Utility/PersisterHelper.php
+++ b/lib/Doctrine/ORM/Utility/PersisterHelper.php
@@ -20,7 +20,6 @@
 
 namespace Doctrine\ORM\Utility;
 
-use Doctrine\Common\Util\ClassUtils;
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Query\QueryException;