diff --git a/htdocs/core/tpl/admin_extrafields_edit.tpl.php b/htdocs/core/tpl/admin_extrafields_edit.tpl.php
index 3478e53d82d..57e35d6a927 100644
--- a/htdocs/core/tpl/admin_extrafields_edit.tpl.php
+++ b/htdocs/core/tpl/admin_extrafields_edit.tpl.php
@@ -40,6 +40,12 @@
  * @var string $textobject
  * @var string[] $type2label
  */
+'@phan-var-force string $attrname';
+'@phan-var-force string $action';
+'@phan-var-force string $elementtype';
+'@phan-var-force string $textobject';
+'@phan-var-force string[] $type2label';
+
 // Protection to avoid direct call of template
 if (empty($conf) || !is_object($conf)) {
 	print "Error, template page can't be called as URL";