diff --git a/tests/ApiTest.php b/tests/ApiTest.php
index af165ee5a..639b72558 100644
--- a/tests/ApiTest.php
+++ b/tests/ApiTest.php
@@ -12,7 +12,7 @@ use Friendica\Core\Protocol;
 use Friendica\Core\System;
 use Friendica\Network\HTTPException;
 
-require_once __DIR__.'/../include/api.php';
+require_once(__DIR__ . '/../include/api.php');
 
 /**
  * Tests for the API functions.
diff --git a/tests/DatabaseTest.php b/tests/DatabaseTest.php
index 3dddae997..6798f6093 100644
--- a/tests/DatabaseTest.php
+++ b/tests/DatabaseTest.php
@@ -14,7 +14,7 @@ use PHPUnit\DbUnit\TestCaseTrait;
 use PHPUnit\Framework\TestCase;
 use PHPUnit_Extensions_Database_DB_IDatabaseConnection;
 
-require_once __DIR__.'/../boot.php';
+require_once(__DIR__ . '/../boot.php');
 
 /**
  * Abstract class used by tests that need a database.