diff --git a/net/relayd/src/opnsense/mvc/tests/app/compound/OPNsense/Relayd/RelaydTest.php b/net/relayd/src/opnsense/mvc/tests/app/compound/OPNsense/Relayd/RelaydTest.php
index 86cca2719..8df0b737a 100644
--- a/net/relayd/src/opnsense/mvc/tests/app/compound/OPNsense/Relayd/RelaydTest.php
+++ b/net/relayd/src/opnsense/mvc/tests/app/compound/OPNsense/Relayd/RelaydTest.php
@@ -40,7 +40,7 @@ class RelaydTest extends \PHPUnit\Framework\TestCase
     // holds the SettingsController object
     protected static $setRelayd;
 
-    public static function setUpBeforeClass()
+    public static function setUpBeforeClass(): void
     {
         self::$setRelayd = new \OPNsense\Relayd\Api\SettingsController();
     }