diff --git a/ceph.spec b/ceph.spec
index 2d10d1d..0c9e578 100644
--- a/ceph.spec
+++ b/ceph.spec
@@ -1164,7 +1164,7 @@ cd build
 %if 0%{with ocf}
     -DWITH_OCF=ON \
 %endif
-%ifarch aarch64 armv7hl mips mipsel ppc ppc64 ppc64le %{ix86} x86_64
+%ifarch aarch64 armv7hl mips mipsel ppc ppc64 ppc64le %{ix86} x86_64 s390x
     -DWITH_BOOST_CONTEXT=ON \
 %else
     -DWITH_BOOST_CONTEXT=OFF \