diff --git a/src/SortableListener.php b/src/SortableListener.php
index 79cca6f..9710836 100644
--- a/src/SortableListener.php
+++ b/src/SortableListener.php
@@ -20,6 +20,7 @@ class SortableListener extends Object implements Subscriber
 	private $reflCache = [];
 
 
+
 	public function getSubscribedEvents()
 	{
 		return [Events::preUpdate, Events::postPersist, Events::preRemove];
@@ -101,17 +102,31 @@ public function postPersist(LifecycleEventArgs $args)
 		if (!$args->getEntity() instanceof ISortable) {
 			return;
 		}
+		/** @var ISortable $entity */
 		$entity = $args->getEntity();
 		$em = $args->getEntityManager();
-		$pos = $this->getMaxPosition($em, $entity);
-		$rp = $this->getPropReflection($entity);
-		$rp->setValue($entity, $pos);
-		$uow = $em->getUnitOfWork();
+		$maxPos = $this->getMaxPosition($em, $entity);
+
 		$meta = $em->getClassMetadata(get_class($entity));
-		$uow->recomputeSingleEntityChangeSet($meta, $entity);
-		//todo: use extraUpdates
-		$uow->getEntityPersister(get_class($entity))->update($entity);
-		$uow->setOriginalEntityProperty(spl_object_hash($entity), 'position', $pos);
+		if (!$entity->getPosition() || $entity->getPosition() > $maxPos) {
+			$rp = $this->getPropReflection($entity);
+			$rp->setValue($entity, $maxPos);
+			$uow = $em->getUnitOfWork();
+			$uow->recomputeSingleEntityChangeSet($meta, $entity);
+			//todo: use extraUpdates
+			$uow->getEntityPersister(get_class($entity))->update($entity);
+			$uow->setOriginalEntityProperty(spl_object_hash($entity), 'position', $maxPos);
+		} else {
+			$pos = $entity->getPosition();
+			$qb = $this->createBaseQb($args->getEntityManager(), $entity);
+			$qb->update()
+				->andWhere('e.position >= :from')
+				->setParameter('from', $pos)
+				->andWhere('e.id <> :id')
+				->setParameter('id', $entity->id)
+				->set('e.position', 'e.position + 1')
+				->getQuery()->getResult();
+		}
 	}
 
 
diff --git a/tests/src/SortableTestCase.phpt b/tests/src/SortableTestCase.phpt
index 1bb194c..9a4fc19 100644
--- a/tests/src/SortableTestCase.phpt
+++ b/tests/src/SortableTestCase.phpt
@@ -37,6 +37,47 @@ class SortableTestCase extends TestCase
 	}
 
 
+	public function testPersistSetPosition()
+	{
+		$categories = $this->createCategories();
+		$categories[] = $cat = new Category('New category');
+		$cat->setPosition(2);
+		$this->em->persist($cat);
+		$this->em->flush();
+		$this->refresh($categories); //todo: update entities without refresh
+		Assert::same(1, $categories[1]->getPosition());
+		Assert::same(3, $categories[2]->getPosition());
+		Assert::same(4, $categories[3]->getPosition());
+		Assert::same(5, $categories[4]->getPosition());
+		Assert::same(6, $categories[5]->getPosition());
+		Assert::same(7, $categories[6]->getPosition());
+		Assert::same(2, $categories[7]->getPosition());
+	}
+
+
+	public function testPersistSetPositionMultiple()
+	{
+		//failing
+		$categories = $this->createCategories();
+		$categories[] = $cat = new Category('New category');
+		$cat->setPosition(2);
+		$categories[] = $cat2 = new Category('New category 2');
+		$cat2->setPosition(3);
+		$this->em->persist($cat);
+		$this->em->persist($cat2);
+		$this->em->flush();
+		$this->refresh($categories); //todo: update entities without refresh
+		Assert::same(1, $categories[1]->getPosition());
+		Assert::same(4, $categories[2]->getPosition());
+		Assert::same(5, $categories[3]->getPosition());
+		Assert::same(6, $categories[4]->getPosition());
+		Assert::same(7, $categories[5]->getPosition());
+		Assert::same(8, $categories[6]->getPosition());
+		Assert::same(2, $categories[7]->getPosition());
+		Assert::same(3, $categories[8]->getPosition());
+	}
+
+
 	public function testMoveUp()
 	{
 		$categories = $this->createCategories();
@@ -67,6 +108,21 @@ class SortableTestCase extends TestCase
 	}
 
 
+	public function testMoveMultipleSamePosition()
+	{
+		$categories = $this->createCategories();
+		$categories[5]->setPosition(2);
+		$categories[6]->setPosition(2);
+		$this->em->flush();
+		$this->refresh($categories); //todo: update entities without refresh
+		Assert::same(1, $categories[1]->getPosition());
+		Assert::same(4, $categories[2]->getPosition());
+		Assert::same(5, $categories[3]->getPosition());
+		Assert::same(6, $categories[4]->getPosition());
+		Assert::same(3, $categories[5]->getPosition());
+		Assert::same(2, $categories[6]->getPosition());
+	}
+
 	public function testRemove()
 	{
 		$categories = $this->createCategories();
@@ -107,4 +163,4 @@ class SortableTestCase extends TestCase
 }
 
 
-run(new SortableTestCase());
\ No newline at end of file
+run(new SortableTestCase());