diff --git a/ghc-MonadRandom.changes b/ghc-MonadRandom.changes
index b93f9ac..71d9c29 100644
--- a/ghc-MonadRandom.changes
+++ b/ghc-MonadRandom.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Oct 17 12:20:00 UTC 2020 - Ondřej Súkup <mimi.vx@gmail.com>
+ 
+- force i686 arch on i586
+ 
 -------------------------------------------------------------------
 Tue Nov  3 10:08:39 UTC 2020 - psimons@suse.com
 
diff --git a/ghc-MonadRandom.spec b/ghc-MonadRandom.spec
index a6264b9..f76b987 100644
--- a/ghc-MonadRandom.spec
+++ b/ghc-MonadRandom.spec
@@ -31,6 +31,12 @@ BuildRequires:  ghc-random-devel
 BuildRequires:  ghc-rpm-macros
 BuildRequires:  ghc-transformers-compat-devel
 BuildRequires:  ghc-transformers-devel
+# 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
 Support for computations which consume random values.