diff --git a/alex.spec b/alex.spec
index 4e573c0..d920458 100644
--- a/alex.spec
+++ b/alex.spec
@@ -2,8 +2,9 @@
 %global debug_package %{nil}
 
 Name:           alex
+# part of haskell-platform
 Version:        2.3.1
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        A lexer generator for Haskell
 
 Group:          Development/Tools
@@ -13,7 +14,7 @@ Source0:        http://hackage.haskell.org/packages/archive/%{name}/%{version}/%
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 # fedora ghc archs:
 ExclusiveArch:  %{ix86} x86_64 ppc alpha
-BuildRequires:  ghc
+BuildRequires:  ghc, ghc-rpm-macros
 BuildRequires:  autoconf docbook-style-xsl libxslt
 
 %description
@@ -54,6 +55,9 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
+* Sun May 17 2009 Jens Petersen <petersen@redhat.com> - 2.3.1-5
+- buildrequires ghc-rpm-macros
+
 * Fri Apr 24 2009 Jens Petersen <petersen@redhat.com> - 2.3.1-4
 - rebuild against ghc-6.10.2