diff --git a/tests/Doctrine/Tests/ORM/UnitOfWorkTest.php b/tests/Doctrine/Tests/ORM/UnitOfWorkTest.php
index ef321e761..acf256a96 100644
--- a/tests/Doctrine/Tests/ORM/UnitOfWorkTest.php
+++ b/tests/Doctrine/Tests/ORM/UnitOfWorkTest.php
@@ -373,6 +373,26 @@ class UnitOfWorkTest extends OrmTestCase
         $this->_unitOfWork->clear(uniqid('nonExisting', true));
     }
 
+    /**
+     * @group 6017
+     */
+    public function testClearManagerWithProxyClassName()
+    {
+        $proxy = $this->_emMock->getReference(Country::class, ['id' => random_int(457, 100000)]);
+
+        $entity = new Country(456, 'United Kingdom');
+
+        $this->_unitOfWork->persist($entity);
+
+        $this->assertTrue($this->_unitOfWork->isInIdentityMap($entity));
+        $this->assertTrue($this->_unitOfWork->isScheduledForInsert($entity));
+
+        $this->_unitOfWork->clear(get_class($proxy));
+
+        $this->assertFalse($this->_unitOfWork->isInIdentityMap($entity));
+        $this->assertFalse($this->_unitOfWork->isScheduledForInsert($entity));
+    }
+
     /**
      * @group 6017
      */