diff --git a/gtkmm2.changes b/gtkmm2.changes
index e860b29..b904bab 100644
--- a/gtkmm2.changes
+++ b/gtkmm2.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Dec  5 14:01:23 UTC 2016 - jengelh@inai.de
+
+- Rectify RPM groups and replace old macros.
+
 -------------------------------------------------------------------
 Sun Sep  4 17:50:32 UTC 2016 - zaitor@opensuse.org
 
diff --git a/gtkmm2.spec b/gtkmm2.spec
index 4fc1685..45d6423 100644
--- a/gtkmm2.spec
+++ b/gtkmm2.spec
@@ -22,7 +22,7 @@ Version:        2.24.5
 Release:        0
 Summary:        C++ Interface for GTK2 (a GUI Library for X)
 License:        LGPL-2.1+
-Group:          System/Libraries
+Group:          Development/Libraries/GNOME
 Url:            http://www.gtkmm.org/
 Source:         http://download.gnome.org/sources/gtkmm/2.24/%{_name}-%{version}.tar.xz
 Source99:       baselibs.conf
@@ -58,7 +58,7 @@ freely combined to quickly create complex user interfaces.
 
 %package devel
 Summary:        C++ Interface for GTK2 (a GUI library for X)
-Group:          Development/Libraries/C and C++
+Group:          Development/Libraries/GNOME
 Requires:       libgtkmm-2_4-1 = %{version}
 Provides:       gtkmm24-devel = %{version}
 Obsoletes:      gtkmm24-devel < %{version}
@@ -84,9 +84,6 @@ make %{?_smp_mflags} gtkmm_docdir=%{_docdir}/%{name}/docs
 find %{buildroot}%{_libdir} -name '*.la' -type f -delete -print
 %fdupes %{buildroot}
 
-%clean
-rm -rf %{buildroot}
-
 %post -n libgtkmm-2_4-1 -p /sbin/ldconfig
 
 %postun -n libgtkmm-2_4-1 -p /sbin/ldconfig