diff --git a/ghc-foundation.changes b/ghc-foundation.changes
index c69815f..ac1c482 100644
--- a/ghc-foundation.changes
+++ b/ghc-foundation.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Oct 17 12:20:00 UTC 2020 - Ondřej Súkup <mimi.vx@gmail.com>
+ 
+- force i686 arch on i586
+ 
 -------------------------------------------------------------------
 Mon Aug 31 09:34:30 UTC 2020 - psimons@suse.com
 
diff --git a/ghc-foundation.spec b/ghc-foundation.spec
index b2f40fe..97bc3ea 100644
--- a/ghc-foundation.spec
+++ b/ghc-foundation.spec
@@ -29,6 +29,12 @@ Source1:        https://hackage.haskell.org/package/%{pkg_name}-%{version}/revis
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-basement-devel
 BuildRequires:  ghc-rpm-macros
+# GHC dont support i586
+%ifarch %{ix86}
+ExclusiveArch:  i586 i686
+ExclusiveArch:  i686
+%{expand:%%global optflags %(echo "%{optflags}"|sed -e s/i586/i686/) -march=i686 -mtune=generic}
+%endif
 
 %description
 A custom prelude with no dependencies apart from base.