diff --git a/ghc-dense-linear-algebra.changes b/ghc-dense-linear-algebra.changes
index 67b51dd..5b9517a 100644
--- a/ghc-dense-linear-algebra.changes
+++ b/ghc-dense-linear-algebra.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Oct 17 12:20:00 UTC 2020 - Ondřej Súkup <mimi.vx@gmail.com>
+ 
+- force i686 arch on i586
+ 
 -------------------------------------------------------------------
 Sat Nov  7 15:35:15 UTC 2020 - psimons@suse.com
 
diff --git a/ghc-dense-linear-algebra.spec b/ghc-dense-linear-algebra.spec
index 5effab7..044e49b 100644
--- a/ghc-dense-linear-algebra.spec
+++ b/ghc-dense-linear-algebra.spec
@@ -34,6 +34,12 @@ BuildRequires:  ghc-vector-algorithms-devel
 BuildRequires:  ghc-vector-binary-instances-devel
 BuildRequires:  ghc-vector-devel
 BuildRequires:  ghc-vector-th-unbox-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
 %if %{with tests}
 BuildRequires:  ghc-QuickCheck-devel
 BuildRequires:  ghc-hspec-devel