diff --git a/psalm_autoload.php b/psalm_autoload.php
index d0f0c9af46e6..83e406972d4a 100644
--- a/psalm_autoload.php
+++ b/psalm_autoload.php
@@ -25,6 +25,7 @@
 
 $dirs = [
     'tests/_support/Controllers',
+    'tests/_support/_controller',
 ];
 
 foreach ($dirs as $dir) {