diff --git a/testing/lisp/test-ox-html.el b/testing/lisp/test-ox-html.el
index cbe272ef8..0959d1441 100644
--- a/testing/lisp/test-ox-html.el
+++ b/testing/lisp/test-ox-html.el
@@ -1,4 +1,4 @@
-;;; test-ox-html.el --- Tests for ox-html.el
+;;; test-ox-html.el --- Tests for ox-html.el  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2022  Rudolf Adamkovič
 
diff --git a/testing/lisp/test-ox-texinfo.el b/testing/lisp/test-ox-texinfo.el
index f69b2ad6d..b67d2f4c1 100644
--- a/testing/lisp/test-ox-texinfo.el
+++ b/testing/lisp/test-ox-texinfo.el
@@ -1,4 +1,4 @@
-;;; test-ox-texinfo.el --- Tests for ox-texinfo.el
+;;; test-ox-texinfo.el --- Tests for ox-texinfo.el  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2022  Rudolf Adamkovič