diff --git a/blis.spec b/blis.spec
index 35673a9..0b29c9c 100644
--- a/blis.spec
+++ b/blis.spec
@@ -20,7 +20,7 @@
 
 Name:		blis
 Version:	0.7.0
-Release:	2%{?dist}
+Release:	3%{?dist}
 Summary:	BLAS-like Library Instantiation Software Framework
 License:	BSD
 URL:		https://github.com/flame/blis
@@ -29,6 +29,8 @@ Source0:	https://github.com/flame/blis/archive/%commit/%name-%shortcommit.tar.gz
 %else
 Source0:	https://github.com/flame/blis/archive/%version/%name-%version.tar.gz
 %endif
+# Don't identify s390x as 32-bit
+Patch1:		blis-s390x.patch
 BuildRequires:	perl
 BuildRequires:	%{?dts:devtoolset-%{?dts}-binutils devtoolset-%{?dts}-}gcc
 BuildRequires:	/usr/bin/python3 gcc-gfortran chrpath
@@ -131,6 +133,7 @@ BLIS architecture macros.
 # 0.6.0: removed bli_thread_get_env, bli_thread_init_rntm; indirect
 # sub-types in bli_addd_ex; ARCH enum in bli_arch_query_id.
 echo %sover | awk -F. '{printf("%s\n%s.%s\n", $2,$3,$4)}' >so_version
+%patch1 -p1
 
 
 %build
@@ -139,6 +142,7 @@ case %_arch in
 x86_64) arch=x86_64 ;;
 # a57 runs on all aarch64 and the optimized micro-kernel should be a
 # better default than generic.
+# Fixme:  Include my changes for arm and ppc micro-arch dispatch.
 aarch64) arch=cortexa57 ;;
 armv7hl) arch=cortexa9 ;;	# Similarly to aarch64
 *) arch=generic ;;
@@ -378,8 +382,11 @@ export LD_LIBRARY_PATH=`pwd`/serial/lib
 %{macrosdir}/macros.blis-srpm
 
 %changelog
+* Wed Jul  1 2020 Dave Love <loveshack@fedoraproject.org> - 0.7.0-3
+- Patch to build 64-, not 32-bit version on s390x (#1852549)
+
 * Wed May 27 2020 Dave Love <loveshack@fedoraproject.org> - 0.7.0-2
-- Revert build for arches that don't actually have had memkind packages
+- Revert build for arches that don't actually have memkind packages
 
 * Wed May 20 2020 Dave Love <loveshack@fedoraproject.org> - 0.7.0-1
 - New version