diff --git a/Filter/ExistsFilter.php b/Filter/ExistsFilter.php
index 8f993e8e8ec583e97eebeab6387b70570af46e52..fb91c674f352f2310670500785985988661b57c8 100644
--- a/Filter/ExistsFilter.php
+++ b/Filter/ExistsFilter.php
@@ -15,7 +15,7 @@ use ONGR\ElasticsearchBundle\DSL\BuilderInterface;
 
 /**
  * Represents Elasticsearch "exists" filter.
- * 
+ *
  * @link http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-exists-filter.html
  */
 class ExistsFilter implements BuilderInterface