diff --git a/tp_smapi.spec b/tp_smapi.spec
index ac3ead7..3dcd024 100644
--- a/tp_smapi.spec
+++ b/tp_smapi.spec
@@ -1,22 +1,18 @@
 %define module tp_smapi
-%define version 0.44
 
 Name:           %{module}
-Version:        %{version}
+Version:        0.44
 Release:        1%{?dist}
 Summary:        IBM ThinkPad hardware functions driver - DKMS version
-Group:          Kernel/Drivers
 License:        GPLv2
 Source0:        %{module}-%{version}.tgz
 
 Requires:       dkms >= 1.00
-Requires:       kernel-headers
-Requires:       kernel-devel
 
 BuildArch:      noarch
 
 
-%description 
+%description
 The package contains kernel driver for ThinkPad SMAPI (System
 Management Application Program Interface). The driver is built using
 DKMS.
@@ -26,24 +22,13 @@ DKMS.
 
 
 %install
-if [ "$RPM_BUILD_ROOT" != "/" ]; then
-	rm -rf $RPM_BUILD_ROOT
-fi
-mkdir -p $RPM_BUILD_ROOT/usr/src/%{module}-%{version}/
-cp -rf * $RPM_BUILD_ROOT/usr/src/%{module}-%{version}
-
-%clean
-if [ "$RPM_BUILD_ROOT" != "/" ]; then
-	rm -rf $RPM_BUILD_ROOT
-fi
+mkdir -p %{buildroot}%{_usrsrc}/%{module}-%{version}/
+cp -rf * %{buildroot}%{_usrsrc}/%{module}-%{version}
 
 %files
-%defattr(-,root,root)
 %doc README TODO
 %{_usrsrc}/%{module}-%{version}/
 
-%doc
-
 %post
 dkms add -m %{module} -v %{version} --rpm_safe_upgrade
 dkms build -m %{module} -v %{version}