diff --git a/happy.spec b/happy.spec
index 04be473..22380e6 100644
--- a/happy.spec
+++ b/happy.spec
@@ -7,14 +7,14 @@
 Name:           happy
 # part of haskell-platform-2011.1.0.0
 Version:        1.18.6
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        LALR(1) Parser Generator for Haskell
 License:        BSD
 Group:          Development/Tools
 URL:            http://haskell.org/happy/
 Source:         http://hackage.haskell.org/packages/archive/%{name}/%{version}/%{name}-%{version}.tar.gz
 # fedora ghc archs:
-ExclusiveArch:  %{ix86} x86_64 ppc alpha
+ExclusiveArch:  %{ix86} x86_64 ppc alpha sparcv9
 BuildRequires:  ghc, ghc-devel
 BuildRequires:  ghc-rpm-macros >= 0.7.0
 BuildRequires:  autoconf, docbook-dtds, docbook-style-xsl, libxslt, libxml2
@@ -58,6 +58,9 @@ cd ..
 
 
 %changelog
+* Thu Mar 10 2011 Fabio M. Di Nitto <fdinitto@redhat.com> - 1.18.6-4
+- Enable build on sparcv9
+
 * Wed Feb 09 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.18.6-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild