diff --git a/pam_krb5.changes b/pam_krb5.changes
index 26d8fe6..e8b4973 100644
--- a/pam_krb5.changes
+++ b/pam_krb5.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed May 28 15:24:21 UTC 2014 - ckornacker@suse.com
+
+- serialize make process to prevent build failures on s390
+
 -------------------------------------------------------------------
 Tue Apr 16 11:06:38 CEST 2013 - mc@suse.de
 
diff --git a/pam_krb5.spec b/pam_krb5.spec
index 99ee99b..f290bd3 100644
--- a/pam_krb5.spec
+++ b/pam_krb5.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package pam_krb5
 #
-# Copyright (c) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -70,7 +70,7 @@ CFLAGS="$RPM_OPT_FLAGS -D_GNU_SOURCE "         \
             --with-default-multiple-ccaches="su su-l" \
             --with-default-no-cred-session="sshd" \
             --enable-default-ccname-template=DIR:/run/user/%%U/krb5cc_XXXXXX
-make %{?jobs:-j%jobs}
+make -j1
 make -C po update-po
 # does not work in the buildservice
 #make check