diff --git a/gap-ace.changes b/gap-ace.changes
index 0a0a66c..a5994f4 100644
--- a/gap-ace.changes
+++ b/gap-ace.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Aug 29 21:00:13 UTC 2018 - Jan Engelhardt <jengelh@inai.de>
+
+- Update build process for gap 4.9.x.
+
 -------------------------------------------------------------------
 Tue Sep 19 10:01:59 UTC 2017 - jengelh@inai.de
 
diff --git a/gap-ace.spec b/gap-ace.spec
index 6f45985..7b47ef1 100644
--- a/gap-ace.spec
+++ b/gap-ace.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package gap-ace
 #
-# Copyright (c) 2016 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
@@ -12,7 +12,7 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
+# Please submit bugfixes or comments via https://bugs.opensuse.org/
 #
 
 
@@ -27,6 +27,7 @@ Url:            http://www.math.rwth-aachen.de/~Greg.Gamble/ACE/
 #Git-Clone:	https://github.com/gap-packages/ace
 Source:         https://www.gap-system.org/pub/gap/gap4/tar.bz2/packages/ace-%version.tar.bz2
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
+BuildRequires:  gap
 BuildRequires:  gap-devel
 BuildRequires:  gap-rpm-devel
 Requires:       gap-core >= 4.7
@@ -44,8 +45,8 @@ from within GAP.
 make %{?_smp_mflags} CC="cc %optflags"
 
 %install
+rm -Rf Makefile* configure src/
 %gappkg_simple_install
-rm -Rf "%buildroot/$moddir/src"
 
 %files -f %name.files
 %defattr(-,root,root)