diff --git a/includes/admin/core/class-admin-forms.php b/includes/admin/core/class-admin-forms.php
index 378697d8..260d29a9 100644
--- a/includes/admin/core/class-admin-forms.php
+++ b/includes/admin/core/class-admin-forms.php
@@ -125,6 +125,12 @@ if ( ! class_exists( 'um\admin\core\Admin_Forms' ) ) {
 							'target' => array(),
 							'class' => array(),
 						),
+						'i' => array(
+							'class' => array(),
+						),
+						'span' => array(
+							'class' => array(),
+						),
 						'br' => array(),
 						'em' => array(),
 						'strong' => array(