diff --git a/sdljava.spec b/sdljava.spec
index 3cb574b..d5e6f64 100644
--- a/sdljava.spec
+++ b/sdljava.spec
@@ -7,7 +7,7 @@
 
 Name:           sdljava
 Version:        0.9.1
-Release:        36%{?dist}
+Release:        37%{?dist}
 Summary:        Java binding to the SDL API
 License:        LGPLv2+
 URL:            http://sdljava.sourceforge.net/
@@ -124,6 +124,9 @@ export ARCH_DEFINE="-D__powerpc__ -D__powerpc64__ -D__LONG_DOUBLE_128__"
 %ifarch ppc64le
 export ARCH_DEFINE="-D__powerpc__ -D__powerpc64__ -D__LITTLE_ENDIAN__ -D\"__BYTE_ORDER__=1234\" -D\"_CALL_ELF=2\" -D__LONG_DOUBLE_128__"
 %endif
+%ifarch s390x
+export ARCH_DEFINE="-D__s390x__ -D__LONG_DOUBLE_128__"
+%endif
 # special case ix86 as all of ix86 should define __i386__
 %ifarch %{ix86}
 export ARCH_DEFINE="-D__i386__"
@@ -218,6 +221,9 @@ ln -s ../../fonts/dejavu/DejaVuSans-BoldOblique.ttf \
 
 
 %changelog
+* Mon Sep 04 2017 Michael Simacek <msimacek@redhat.com> - 0.9.1-37
+- Fix build on s390x
+
 * Thu Aug 03 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.9.1-36
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild