diff --git a/tests/Aggregation/TopHitsAggregationTest.php b/tests/Aggregation/TopHitsAggregationTest.php
index 6e4ca2162666252bf2e72bb456b2ccd93a0f428d..a48f0162a4f228439fcba115dba6f3357841b8f4 100644
--- a/tests/Aggregation/TopHitsAggregationTest.php
+++ b/tests/Aggregation/TopHitsAggregationTest.php
@@ -58,7 +58,7 @@ class TopHitsAggregationTest extends \PHPUnit_Framework_TestCase
                     'from' => 1,
                     '_source' => [
                         'include' => ['title'],
-                    ]
+                    ],
                 ],
             ],
         ];