diff --git a/etcd.changes b/etcd.changes
index f778c01..106bfc3 100644
--- a/etcd.changes
+++ b/etcd.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Feb  1 16:58:18 CET 2018 - ro@suse.de
+
+- do not build on s390, only on s390x (no go on s390)
+
 -------------------------------------------------------------------
 Thu Nov 23 13:48:13 UTC 2017 - rbrown@suse.com
 
diff --git a/etcd.spec b/etcd.spec
index c77c7b5..ea52528 100644
--- a/etcd.spec
+++ b/etcd.spec
@@ -41,6 +41,7 @@ BuildRequires:  golang(API) = 1.8
 ExcludeArch:    %ix86
 Requires(post): %fillup_prereq
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
+ExcludeArch:    s390
 %{?systemd_requires}
 %{go_provides}
 # Make sure that the binary is not getting stripped.