diff --git a/reproducible.patch b/reproducible.patch
new file mode 100644
index 0000000..d742ebb
--- /dev/null
+++ b/reproducible.patch
@@ -0,0 +1,48 @@
+https://github.com/Genivia/ugrep/pull/50 
+
+From e5413eeb4a98339587e9b32fe098e305b2bb9092 Mon Sep 17 00:00:00 2001
+From: "Bernhard M. Wiedemann" <bwiedemann@suse.de>
+Date: Sat, 4 Jul 2020 06:18:32 +0200
+Subject: [PATCH] Disable march=native for SSE2
+
+Without this patch, the code would only build binaries with SSE2,
+if the build machine CPU supported SSE2.
+
+And through the -march=native flag, it would then use more CPU features
+available on the build CPU that might not be available
+on the target machine CPU. That can cause an illegal instruction
+exception on the target machine.
+
+This patch changes behaviour so that only configure options determine the
+result of the build, regarding SSE2.
+
+See https://reproducible-builds.org/ for why this is good.
+
+This PR was done while working on reproducible builds for openSUSE.
+---
+ configure    | 4 ++--
+ configure.ac | 4 ++--
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+Index: ugrep-2.3.2/configure
+===================================================================
+--- ugrep-2.3.2.orig/configure
++++ ugrep-2.3.2/configure
+@@ -7708,7 +7709,7 @@ $as_echo "no" >&6; }
+   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CXX} supports SSE2 intrinsics" >&5
+ $as_echo_n "checking whether ${CXX} supports SSE2 intrinsics... " >&6; }
+   save_CXXFLAGS=$CXXFLAGS
+-  CXXFLAGS="-march=native"
++  CXXFLAGS="-msse2"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ /* end confdefs.h.  */
+ #include <emmintrin.h>
+@@ -7730,7 +7731,7 @@ rm -f core conftest.err conftest.$ac_obj
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: $msse2_ok" >&5
+ $as_echo "$msse2_ok" >&6; }
+   if test "x$msse2_ok" = "xyes"; then
+-    SIMD_FLAGS="-march=native -msse2 -DHAVE_SSE2"
++    SIMD_FLAGS="-msse2 -DHAVE_SSE2"
+   fi
+ else
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
diff --git a/ugrep.changes b/ugrep.changes
index dd14f89..4fbe408 100644
--- a/ugrep.changes
+++ b/ugrep.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Sun Jul  5 04:34:08 UTC 2020 - Bernhard Wiedemann <bwiedemann@suse.com>
+
+- Disable avx
+- Add reproducible.patch to drop march=native
+  to make package build reproducible (boo#1100677)
+
 -------------------------------------------------------------------
 Tue Jun 30 16:40:55 UTC 2020 - Andreas Stieger <andreas.stieger@gmx.de>
 
diff --git a/ugrep.spec b/ugrep.spec
index 1269212..9e9a6d5 100644
--- a/ugrep.spec
+++ b/ugrep.spec
@@ -24,6 +24,7 @@ License:        BSD-3-Clause
 Group:          Productivity/File utilities
 URL:            https://github.com/Genivia/ugrep
 Source:         https://github.com/Genivia/ugrep/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
+Patch0:         reproducible.patch
 BuildRequires:  gcc-c++
 BuildRequires:  pkgconfig
 BuildRequires:  pkgconfig(bzip2)
@@ -38,9 +39,11 @@ fuzzy search.
 
 %prep
 %setup -q
+%patch0 -p1
 
 %build
 %configure \
+	--disable-avx \
 	--enable-color
 %make_build