diff --git a/app-emacs/auctex/files/50auctex-gentoo.el b/app-emacs/auctex/files/50auctex-gentoo.el
index ad43779671948..6648931c309e3 100644
--- a/app-emacs/auctex/files/50auctex-gentoo.el
+++ b/app-emacs/auctex/files/50auctex-gentoo.el
@@ -1,5 +1,4 @@
-
-;;; auctex site-lisp configuration
+;;; auctex site-lisp configuration  -*-lexical-binding:t-*-
 
 (add-to-list 'load-path "@SITELISP@")
 (require 'tex-site)
diff --git a/app-emacs/auctex/files/60auctex-gentoo.el b/app-emacs/auctex/files/60auctex-gentoo.el
index 93b601b297696..37f2296d13e38 100644
--- a/app-emacs/auctex/files/60auctex-gentoo.el
+++ b/app-emacs/auctex/files/60auctex-gentoo.el
@@ -1,4 +1,3 @@
-
-;;; auctex site-lisp configuration, activating preview-latex
+;;; auctex site-lisp config, activating preview-latex  -*-lexical-binding:t-*-
 
 (load "preview-latex.el" nil t t)