diff --git a/0001-fix-assert-call.patch b/0001-fix-assert-call.patch
new file mode 100644
index 0000000..b5d45aa
--- /dev/null
+++ b/0001-fix-assert-call.patch
@@ -0,0 +1,40 @@
+From df756ee1f2c37c8ed02bf8b357102e577c41901f Mon Sep 17 00:00:00 2001
+From: David Tardon <dtardon@redhat.com>
+Date: Thu, 29 Jan 2015 10:26:01 +0100
+Subject: [PATCH] fix assert call
+
+Change-Id: I3b06c79b733cf4e97049a8a437680e1f8f339dac
+---
+ bridges/source/cpp_uno/gcc3_linux_s390/cpp2uno.cxx | 2 +-
+ bridges/source/cpp_uno/gcc3_linux_s390/uno2cpp.cxx | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/bridges/source/cpp_uno/gcc3_linux_s390/cpp2uno.cxx b/bridges/source/cpp_uno/gcc3_linux_s390/cpp2uno.cxx
+index 4922278..a21e43e 100644
+--- a/bridges/source/cpp_uno/gcc3_linux_s390/cpp2uno.cxx
++++ b/bridges/source/cpp_uno/gcc3_linux_s390/cpp2uno.cxx
+@@ -360,7 +360,7 @@ static typelib_TypeClass cpp_mediate(
+ 
+     // determine called method
+     sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex];
+-    assert(nMemberPos < pTypeDescr->nAllMembers, "### illegal member index!");
++    assert(nMemberPos < pTypeDescr->nAllMembers); // illegal member index!
+ 
+     TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );
+ 
+diff --git a/bridges/source/cpp_uno/gcc3_linux_s390/uno2cpp.cxx b/bridges/source/cpp_uno/gcc3_linux_s390/uno2cpp.cxx
+index c1815b4..1d95dee 100644
+--- a/bridges/source/cpp_uno/gcc3_linux_s390/uno2cpp.cxx
++++ b/bridges/source/cpp_uno/gcc3_linux_s390/uno2cpp.cxx
+@@ -289,7 +289,7 @@ static void cpp_call(
+     // return
+     typelib_TypeDescription * pReturnTypeDescr = 0;
+     TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
+-    assert(pReturnTypeDescr, "### expected return type description!");
++    assert(pReturnTypeDescr); // ### expected return type description!
+ 
+     void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
+ 
+-- 
+2.1.0
+
diff --git a/libreoffice.spec b/libreoffice.spec
index 7de5753..02a043e 100644
--- a/libreoffice.spec
+++ b/libreoffice.spec
@@ -46,7 +46,7 @@ Summary:        Free Software Productivity Suite
 Name:           libreoffice
 Epoch:          1
 Version:        %{libo_version}.3
-Release:        4%{?libo_prerelease}%{?dist}
+Release:        5%{?libo_prerelease}%{?dist}
 License:        (MPLv1.1 or LGPLv3+) and LGPLv3 and LGPLv2+ and BSD and (MPLv1.1 or GPLv2 or LGPLv2 or Netscape) and Public Domain and ASL 2.0 and Artistic and MPLv2.0 and CC0
 Group:          Applications/Productivity
 URL:            http://www.libreoffice.org/
@@ -332,6 +332,7 @@ Patch24: 0001-Related-rhbz-1185307-One-more-location-to-look-for-H.patch
 Patch25: 0001-Resolves-rhbz-1179642-crash-in-GetFocus-with-empty-m.patch
 Patch26: 0001-rhbz-1177022-vcl-fix-PDF-embedding-of-Type-1-fonts.patch
 Patch27: 0001-don-t-strip-font-names-of-apparent-script-suffixes-a.patch
+Patch28: 0001-fix-assert-call.patch
 
 %define instdir %{_libdir}
 %define baseinstdir %{instdir}/libreoffice
@@ -2355,6 +2356,9 @@ update-desktop-database %{_datadir}/applications &> /dev/null || :
 %endif
 
 %changelog
+* Thu Jan 29 2015 David Tardon <dtardon@redhat.com> - 1:4.4.0.3-5
+- fix build on s390
+
 * Wed Jan 28 2015 Petr Machata <pmachata@redhat.com> - 1:4.4.0.3-4
 - Rebuild for boost 1.57.0