diff --git a/COPYING b/COPYING
index d60c31a..55b391a 100644
--- a/COPYING
+++ b/COPYING
@@ -2,7 +2,7 @@
 		       Version 2, June 1991
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
diff --git a/configure.ac b/configure.ac
index 11ff62e..4754622 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_INIT(tucnak, 4.20)
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS([config.h])
 
 AC_CONFIG_SRCDIR(src/main.c)
 AC_CANONICAL_TARGET