diff --git a/ghc-monad-control.changes b/ghc-monad-control.changes
index 2f0c83d..1838c81 100644
--- a/ghc-monad-control.changes
+++ b/ghc-monad-control.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 Aug 18 10:45:29 UTC 2020 - Peter Simons <psimons@suse.com>
 
diff --git a/ghc-monad-control.spec b/ghc-monad-control.spec
index a547fec..04ec461 100644
--- a/ghc-monad-control.spec
+++ b/ghc-monad-control.spec
@@ -30,6 +30,12 @@ BuildRequires:  ghc-stm-devel
 BuildRequires:  ghc-transformers-base-devel
 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
 This package defines the type class 'MonadBaseControl', a subset of 'MonadBase'