diff --git a/autogen.changes b/autogen.changes
index 13f9ff5..bc95b5f 100644
--- a/autogen.changes
+++ b/autogen.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Tue Mar 27 12:16:08 UTC 2018 - dimstar@opensuse.org
+
+- Explicitly call autoreconf: various patches touch the build
+  system, which results in an implicit call. That in turn only
+  works as long as the automake/autconf version is the same as used
+  when originally bootrapping the tarball.
+
 -------------------------------------------------------------------
 Wed Aug 23 15:03:54 UTC 2017 - bwiedemann@suse.com
 
diff --git a/autogen.spec b/autogen.spec
index 0374ec2..20aed18 100644
--- a/autogen.spec
+++ b/autogen.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package autogen
 #
-# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -21,9 +21,9 @@ Name:           autogen
 Version:        5.18.12
 Release:        0
 Summary:        Automated Text File Generator
-License:        GPL-3.0+
+License:        GPL-3.0-or-later
 Group:          Development/Tools/Building
-Url:            https://www.gnu.org/software/autogen/
+URL:            https://www.gnu.org/software/autogen/
 Source0:        https://ftp.gnu.org/gnu/autogen/rel%{version}/%{name}-%{version}.tar.xz
 Source1:        https://ftp.gnu.org/gnu/autogen/rel%{version}/%{name}-%{version}.tar.xz.sig
 Source2:        http://savannah.gnu.org/project/memberlist-gpgkeys.php?group=autogen&download=1#/%{name}.keyring
@@ -48,7 +48,6 @@ BuildRequires:  xz
 Requires:       libopts-devel
 Requires(post): %{install_info_prereq}
 Requires(preun): %{install_info_prereq}
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
 AutoGen is a tool designed for generating program files that contain
@@ -94,6 +93,7 @@ This package contains devel files for libopts
 %patch5 -p1
 
 %build
+autoreconf -fiv
 %configure \
 	--disable-static \
 	--with-pic