diff --git a/tests/phpunit/tests/post/query.php b/tests/phpunit/tests/post/query.php
index fb1d977810..0539edc7cb 100644
--- a/tests/phpunit/tests/post/query.php
+++ b/tests/phpunit/tests/post/query.php
@@ -1200,7 +1200,7 @@ class Tests_Post_Query extends WP_UnitTestCase {
 			),
 		) );
 
-		$this->assertEquals( array( $p1, $p2 ), $q->posts );
+		$this->assertEqualSets( array( $p1, $p2 ), $q->posts );
 	}
 
 	/**