diff --git a/ghc-bootstrap-helpers.changes b/ghc-bootstrap-helpers.changes
index 82d81d1..11e86a1 100644
--- a/ghc-bootstrap-helpers.changes
+++ b/ghc-bootstrap-helpers.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 Sep  8 09:28:13 UTC 2020 - Ondřej Súkup <mimi.vx@gmail.com>
 
diff --git a/ghc-bootstrap-helpers.spec b/ghc-bootstrap-helpers.spec
index 0bd2b64..fbfc03e 100644
--- a/ghc-bootstrap-helpers.spec
+++ b/ghc-bootstrap-helpers.spec
@@ -27,6 +27,12 @@ URL:            https://build.opensuse.org/project/show/devel:languages:haskell
 Source:         alex-%{alex_ver}.tar.gz
 Source1:        happy-%{happy_ver}.tar.gz
 BuildRequires:  ghc-bootstrap
+# 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
 # This package is not meant to be used outside OBS
 Requires:       this-is-only-for-build-envs