diff --git a/tests/avatar/manager_test.php b/tests/avatar/manager_test.php
index 572d434319..19b7797eb4 100644
--- a/tests/avatar/manager_test.php
+++ b/tests/avatar/manager_test.php
@@ -30,7 +30,7 @@ class phpbb_avatar_manager_test extends \phpbb_database_test_case
 
 	protected function setUp(): void
 	{
-		global $phpbb_root_path, $phpEx;
+		global $phpbb_dispatcher, $phpbb_root_path, $phpEx;
 
 		// Mock phpbb_container
 		$phpbb_container = $this->createMock('Symfony\Component\DependencyInjection\ContainerInterface');
@@ -55,6 +55,7 @@ class phpbb_avatar_manager_test extends \phpbb_database_test_case
 		$imagesize = new \FastImageSize\FastImageSize();
 
 		$dispatcher = new phpbb_mock_event_dispatcher();
+		$phpbb_dispatcher = $dispatcher;
 
 		$controller_helper = $this->createMock('\phpbb\controller\helper');