diff --git a/tests/Controller/MediaAdminControllerTest.php b/tests/Controller/MediaAdminControllerTest.php
index 341e84b78..831a3f846 100644
--- a/tests/Controller/MediaAdminControllerTest.php
+++ b/tests/Controller/MediaAdminControllerTest.php
@@ -133,7 +133,7 @@ public function testListAction(): void
         /**
          * @psalm-suppress MissingClosureParamType
          */
-        $datagrid->expects($matcher)->method('setValue')->willReturnCallback(function (...$parameters) use ($matcher) {
+        $datagrid->expects($matcher)->method('setValue')->willReturnCallback(static function (...$parameters) use ($matcher) {
             /**
              * @psalm-suppress InternalMethod
              */