diff --git a/sombok.spec b/sombok.spec
index 4c1b804..b167b89 100644
--- a/sombok.spec
+++ b/sombok.spec
@@ -1,18 +1,12 @@
 Name:           sombok
 Version:        2.4.0
-Release:        6%{?dist}
+Release:        7%{?dist}
 Summary:        Unicode Text Segmentation Package
-
-Group:          System Environment/Libraries
 License:        GPLv2+ or Artistic clarified
 URL:            http://sf.net/projects/linefold/
 Source0:        https://github.com/hatukanezumi/sombok/archive/%{name}-%{version}.tar.gz
 
-# libthai is available only in Fedora and EL6
-%if 0%{?rhel} > 5 || 0%{?fedora}
 BuildRequires:  libthai-devel
-%endif
-
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  libtool
@@ -28,7 +22,6 @@ Annex #29 (UAX #29).
 
 %package        devel
 Summary:        Development files for %{name}
-Group:          Development/Libraries
 Requires:       %{name}%{?_isa} = %{version}-%{release}
 Requires:       pkgconfig
 
@@ -48,31 +41,29 @@ make %{?_smp_mflags}
 
 
 %install
-rm -rf $RPM_BUILD_ROOT
 make install DESTDIR=$RPM_BUILD_ROOT
 find $RPM_BUILD_ROOT -name '*.la' -exec rm -f {} ';'
 
 
-
-%post -p /sbin/ldconfig
-
-%postun -p /sbin/ldconfig
+%ldconfig_scriptlets
 
 
 %files
-%defattr(-,root,root,-)
-%doc AUTHORS ChangeLog ChangeLog.REL1 COPYING NEWS README README.ja_JP
+%license COPYING
+%doc AUTHORS ChangeLog ChangeLog.REL1 NEWS README README.ja_JP
 %{_libdir}/libsombok.so.*
 
 
 %files devel
-%defattr(-,root,root,-)
 %{_includedir}/sombok*.h
 %{_libdir}/libsombok.so
 %{_libdir}/pkgconfig/sombok.pc
 
 
 %changelog
+* Thu Apr 19 2018 Xavier Bachelot <xavier@bachelot.org> 2.4.0-7
+- Spec clean up.
+
 * Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2.4.0-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild