diff --git a/umoci.changes b/umoci.changes
index 8acae62..15f3924 100644
--- a/umoci.changes
+++ b/umoci.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Feb  1 16:58:09 CET 2018 - ro@suse.de
+
+- do not build on s390, only on s390x (no go on s390)
+
 -------------------------------------------------------------------
 Wed Oct  4 02:52:51 UTC 2017 - asarai@suse.com
 
diff --git a/umoci.spec b/umoci.spec
index 6241bf0..1ebdc27 100644
--- a/umoci.spec
+++ b/umoci.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package umoci
 #
-# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -37,6 +37,7 @@ BuildRequires:  fdupes
 BuildRequires:  go >= 1.6
 BuildRequires:  go-go-md2man
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
+ExcludeArch:    s390
 %if 0%{?is_opensuse}
 ExcludeArch:    s390x
 %endif