diff --git a/ghc-pango.spec b/ghc-pango.spec
index 38858cf..e7ae20a 100644
--- a/ghc-pango.spec
+++ b/ghc-pango.spec
@@ -33,6 +33,8 @@ BuildRequires:  pkgconfig(cairo)
 BuildRequires:  pkgconfig(pango)
 BuildRequires:  pkgconfig(pangocairo)
 # End cabal-rpm deps
+# preprocessing gcc7 __float128 failing
+ExcludeArch:    %{ix86}
 
 %description
 This package provides a wrapper around the Pango C library that allows
@@ -92,6 +94,7 @@ rm -r %{buildroot}%{_datadir}/%{pkg_name}-%{version}
 %changelog
 * Wed Feb 22 2017 Jens Petersen <petersen@redhat.com> - 0.13.3.1-1
 - update to 0.13.3.1
+- exclude i686 due to gcc7 __float128
 
 * Fri Feb 10 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.13.1.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild