diff --git a/rubygem-metaclass.spec b/rubygem-metaclass.spec
index 97ff371..d821de2 100644
--- a/rubygem-metaclass.spec
+++ b/rubygem-metaclass.spec
@@ -1,27 +1,25 @@
 # Generated from metaclass-0.0.1.gem by gem2rpm -*- rpm-spec -*-
-%global gemname metaclass
+%global gem_name metaclass
 
-%global gemdir %(ruby -rubygems -e 'puts Gem::dir' 2>/dev/null)
-%global geminstdir %{gemdir}/gems/%{gemname}-%{version}
-%global rubyabi 1.8
+%global rubyabi 1.9.1
 
 Summary: Adds a metaclass method to all Ruby objects
-Name: rubygem-%{gemname}
+Name: rubygem-%{gem_name}
 Version: 0.0.1
 Release: 4%{?dist}
 Group: Development/Languages
 # https://github.com/floehopper/metaclass/issues/1
 License: MIT
 URL: http://github.com/floehopper/metaclass
-Source0: http://rubygems.org/gems/%{gemname}-%{version}.gem
+Source0: http://rubygems.org/gems/%{gem_name}-%{version}.gem
 Requires: ruby(abi) = %{rubyabi}
 Requires: ruby(rubygems)
 Requires: ruby
 BuildRequires: ruby(abi) = %{rubyabi}
-BuildRequires: ruby(rubygems)
+BuildRequires: rubygems-devel
 BuildRequires: ruby
 BuildArch: noarch
-Provides: rubygem(%{gemname}) = %{version}
+Provides: rubygem(%{gem_name}) = %{version}
 
 %description
 Adds a metaclass method to all Ruby objects
@@ -39,19 +37,19 @@ Documentation for %{name}
 
 %prep
 %setup -q -c -T
-mkdir -p .%{gemdir}
-gem install --local --install-dir .%{gemdir} \
+mkdir -p .%{gem_dir}
+gem install --local --install-dir .%{gem_dir} \
             --force %{SOURCE0}
 
 %build
 
 %install
-mkdir -p %{buildroot}%{gemdir}
-cp -a .%{gemdir}/* \
-        %{buildroot}%{gemdir}/
+mkdir -p %{buildroot}%{gem_dir}
+cp -a .%{gem_dir}/* \
+        %{buildroot}%{gem_dir}/
 
 %check
-pushd .%{geminstdir}
+pushd .%{gem_instdir}
 # test_helper.rb currently references bundler, so it is easier to avoid
 # its usage at all.
 sed -i '1,1d' test/object_methods_test.rb
@@ -60,22 +58,25 @@ popd
 
 
 %files
-%dir %{geminstdir}
-%exclude %{geminstdir}/.gitignore
-%exclude %{geminstdir}/metaclass.gemspec
-%{geminstdir}/lib
-%{geminstdir}/test
-%exclude %{gemdir}/cache/%{gemname}-%{version}.gem
-%{gemdir}/specifications/%{gemname}-%{version}.gemspec
+%dir %{gem_instdir}
+%exclude %{gem_instdir}/.gitignore
+%exclude %{gem_instdir}/metaclass.gemspec
+%{gem_libdir}
+%{gem_instdir}/test
+%exclude %{gem_cache}
+%{gem_spec}
 
 %files doc
-%doc %{geminstdir}/README.md
-%{geminstdir}/Gemfile
-%{geminstdir}/Rakefile
-%doc %{gemdir}/doc/%{gemname}-%{version}
+%doc %{gem_instdir}/README.md
+%{gem_instdir}/Gemfile
+%{gem_instdir}/Rakefile
+%doc %{gem_docdir}
 
 
 %changelog
+* Wed Jan 18 2012 Vít Ondruch <vondruch@redhat.com> - 0.0.1-4
+- Build for Ruby 1.9.3.
+
 * Sat Jan 14 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.0.1-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass_Rebuild