diff --git a/ghc-glib.spec b/ghc-glib.spec
index bb29e77..97ecd11 100644
--- a/ghc-glib.spec
+++ b/ghc-glib.spec
@@ -18,8 +18,7 @@ Group:          System Environment/Libraries
 License:        LGPLv2+
 URL:            http://hackage.haskell.org/package/%{pkg_name}
 Source0:        http://hackage.haskell.org/packages/archive/%{pkg_name}/%{version}/%{pkg_name}-%{version}.tar.gz
-# ghc_excluded_archs is defined in redhat-rpm-config
-ExcludeArch:    %{ghc_excluded_archs}
+ExclusiveArch:  %{ghc_arches}
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-rpm-macros
 BuildRequires:  hscolour