diff --git a/extrema.spec b/extrema.spec
index c050ce5..59e6fcf 100644
--- a/extrema.spec
+++ b/extrema.spec
@@ -1,16 +1,16 @@
 Summary:       Extrema is a powerful visualization and data analysis tool
 Name:          extrema
 Version:       4.4.5
-Release:       10%{?dist}
+Release:       11%{?dist}
 License:       GPLv2+
 Group:         Applications/Engineering
 URL:           http://exsitewebware.com/extrema/
 Source0:       http://downloads.sourceforge.net/extrema/extrema-%{version}.tar.gz
 Patch0:        extrema-4.2.10.desktop.patch
 Patch1:        extrema-4.4.5-gcc46.patch
-BuildRoot:     %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires: wxGTK-devel >= 2.6.3
-BuildRequires: desktop-file-utils ImageMagick
+BuildRequires: desktop-file-utils
+BuildRequires: ImageMagick
 Requires:      extrema-help
 
 %description
@@ -20,23 +20,22 @@ into meaningful information. Its flexibility, sophistication, and
 power allow you to easily develop your own commands and create highly
 customized graphs.
 
-%package help
-Summary:   Help files for Extrema
-Group:     Applications/Engineering
-BuildArch: noarch
-Requires:  %{name} = %{version}-%{release}
-Obsoletes: %{name}-help < 4.3.6-5
+%package       help
+Summary:       Help files for Extrema
+Group:         Applications/Engineering
+BuildArch:     noarch
+Requires:      %{name} = %{version}-%{release}
 
-%description help
+%description   help
 This package contains help files for Extrema.
 
-%package doc
-Summary:   Extrema documentation in PDF format
-Group:     Applications/Engineering
-BuildArch: noarch
-Requires:  %{name} = %{version}-%{release}
+%package       doc
+Summary:       Extrema documentation in PDF format
+Group:         Applications/Engineering
+BuildArch:     noarch
+Requires:      %{name} = %{version}-%{release}
 
-%description doc
+%description   doc
 This package contains Getting Started, User Guide and other
 documentation in PDF format for Extrema.
 
@@ -51,18 +50,13 @@ documentation in PDF format for Extrema.
 convert Images/%{name}.gif %{name}.png
 
 %install
-%{__rm} -rf %{buildroot}
 %{__make} install DESTDIR=%{buildroot}
 desktop-file-install \
     --dir=%{buildroot}%{_datadir}/applications %{name}.desktop
 %{__install} -m 0644 -D %{name}.png %{buildroot}%{_datadir}/pixmaps/%{name}.png
 %{__rm} -f %{buildroot}%{_libdir}/lib%{name}.{la,a}
 
-%clean
-%{__rm} -rf %{buildroot}
-
 %files
-%defattr(-, root, root, -)
 %doc AUTHORS COPYING ChangeLog NEWS README THANKS
 %{_bindir}/%{name}
 %dir %{_datadir}/%{name}
@@ -71,14 +65,15 @@ desktop-file-install \
 %{_datadir}/pixmaps/%{name}.png
 
 %files help
-%defattr(-, root, root, -)
 %{_datadir}/%{name}/Help
 
 %files doc
-%defattr(-, root, root, -)
 %doc doc/*.pdf
 
 %changelog
+* Sun Sep 15 2013 Terje Rosten <terje.rosten@ntnu.no> - 4.4.5-11
+- Remove outdated obsoletes, spec file cleanup
+
 * Sat Aug 03 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.4.5-10
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild