diff -up auctex-12.1/multi-prompt.el.orig auctex-12.1/multi-prompt.el
--- auctex-12.1/multi-prompt.el.orig	2017-12-10 20:49:45.000000000 +0000
+++ auctex-12.1/multi-prompt.el	2018-02-25 20:18:00.089207976 +0000
@@ -11,15 +11,16 @@
 ;; it under the terms of the GNU General Public License as published by
 ;; the Free Software Foundation; either version 3, or (at your option)
 ;; any later version.
-;; 
+;;
 ;; This program is distributed in the hope that it will be useful,
 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ;; GNU General Public License for more details.
-;; 
+;;
 ;; You should have received a copy of the GNU General Public License
-;; along with this program; if not, write to the Free Software
-;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with AUCTeX; see the file COPYING.  If not, write to the Free
+;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+;; MA 02110-1301 USA.
 
 ;;; Commentary:
 
diff -up auctex-12.1/style/comment.el.orig auctex-12.1/style/comment.el
--- auctex-12.1/style/comment.el.orig	2017-12-10 20:49:45.000000000 +0000
+++ auctex-12.1/style/comment.el	2018-02-25 19:46:37.977791016 +0000
@@ -21,8 +21,8 @@
 
 ;; You should have received a copy of the GNU General Public License
 ;; along with AUCTeX; see the file COPYING.  If not, write to the Free
-;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-;; 02111-1307, USA.
+;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+;; MA 02110-1301 USA.
 
 ;;; Commentary:
 
diff -up auctex-12.1/style/latexinfo.el.orig auctex-12.1/style/latexinfo.el
--- auctex-12.1/style/latexinfo.el.orig	2017-12-10 20:49:45.000000000 +0000
+++ auctex-12.1/style/latexinfo.el	2018-02-25 20:16:49.776341548 +0000
@@ -8,15 +8,16 @@
 ;; it under the terms of the GNU General Public License as published by
 ;; the Free Software Foundation; either version 3, or (at your option)
 ;; any later version.
-;; 
+;;
 ;; This program is distributed in the hope that it will be useful,
 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ;; GNU General Public License for more details.
-;; 
+;;
 ;; You should have received a copy of the GNU General Public License
-;; along with this program; if not, write to the Free Software
-;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with AUCTeX; see the file COPYING.  If not, write to the Free
+;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+;; MA 02110-1301 USA.
 
 ;;; Code: