diff --git a/htdocs/admin/hrm.php b/htdocs/admin/hrm.php
index c55622f1a11..74d4bd26748 100644
--- a/htdocs/admin/hrm.php
+++ b/htdocs/admin/hrm.php
@@ -140,6 +140,7 @@ if ($action == 'update') {
 		require_once $file;
 
 		$module = new $classname($db);
+		'@phan-var-force CommonDocGenerator $module';
 
 		if ($module->write_file($tmpobject, $langs) > 0) {
 			header("Location: ".DOL_URL_ROOT."/document.php?modulepart=".strtolower($tmpobjectkey)."&file=SPECIMEN.pdf");