diff --git a/ghc-fgl.spec b/ghc-fgl.spec
index 3676f67..dd79341 100644
--- a/ghc-fgl.spec
+++ b/ghc-fgl.spec
@@ -15,7 +15,7 @@ License:        BSD
 URL:            http://hackage.haskell.org/package/%{pkg_name}
 Source0:        http://hackage.haskell.org/packages/archive/%{pkg_name}/%{version}/%{pkg_name}-%{version}.tar.gz
 # fedora ghc archs:
-ExclusiveArch:  %{ix86} x86_64 ppc alpha sparcv9
+ExclusiveArch:  %{ix86} x86_64 ppc alpha sparcv9 ppc64
 BuildRequires:  ghc-prof
 BuildRequires:  ghc-rpm-macros
 BuildRequires:  hscolour