diff --git a/rubygem-rake-compiler.spec b/rubygem-rake-compiler.spec
index ca13457..3b06fb7 100644
--- a/rubygem-rake-compiler.spec
+++ b/rubygem-rake-compiler.spec
@@ -1,13 +1,19 @@
 %global	gemname	rake-compiler
-%global	gemdir		%(ruby -rubygems -e 'puts Gem::dir' 2>/dev/null)
-%global	geminstdir	%{gemdir}/gems/%{gemname}-%{version}
+%global	gem_name	%{gemname}
+%global	gemdir		%{gem_dir}
+%global	geminstdir	%{gem_instdir}
 
-%global	rubyabi	1.8
+%if 0%{?fedora} >= 17
+%global	gemdir	%{gem_dir}
+%global	gem_name	%{gemname}
+%global	geminstdir	%{gem_instdir}
+%global	rubyabi	1.9.1
+%endif
 
 Summary:	Rake-based Ruby C Extension task generator
 Name:		rubygem-%{gemname}
 Version:	0.8.0
-Release:	1%{?dist}
+Release:	2%{?dist}
 Group:		Development/Languages
 License:	MIT
 URL:		http://rake-compiler.rubyforge.org/
@@ -15,11 +21,14 @@ Source0:	http://gems.rubyforge.org/gems/%{gemname}-%{version}.gem
 
 BuildRequires:	ruby(abi) = %{rubyabi}
 BuildRequires:	ruby(rubygems) >= 1.3.5
-BuildRequires:	rubygem(cucumber)
-BuildRequires:	rubygem(isolate)
-BuildRequires:	rubygem(rake)
+#BuildRequires:	rubygem(cucumber)
+#BuildRequires:	rubygem(isolate)
+#BuildRequires:	rubygem(rake)
 #BuildRequires:	rubygem(rcov)
 BuildRequires:	rubygem(rspec-core)
+%if 0%{?fedora} >= 17
+BuildRequires:	rubygems-devel
+%endif
 Requires:	ruby(abi) = %{rubyabi}
 Requires:	ruby(rubygems) >= 1.3.5
 Requires:	rubygem(rake) >= 0.8.3
@@ -124,6 +133,9 @@ rm -rf %{buildroot}
 
 
 %changelog
+* Sun Jan 22 2012 Mamoru Tasaka <mtasaka@fedoraproject.org> - 0.8.0-2
+- Rebuild against ruby 1.9
+
 * Sun Jan 15 2012 Mamoru Tasaka <mtasaka@fedoraproject.org> - 0.8.0-1
 - 0.8.0