diff --git a/python-autobahn.changes b/python-autobahn.changes
index e35d016..79b27bd 100644
--- a/python-autobahn.changes
+++ b/python-autobahn.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Apr  8 07:32:05 UTC 2019 - Bernhard Wiedemann <bwiedemann@suse.com>
+
+- Add reproducible.patch to make package build reproducible (boo#1100677)
+  and to not use SSE4.1 instructions
+
 -------------------------------------------------------------------
 Fri Apr  5 08:12:36 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
 
diff --git a/python-autobahn.spec b/python-autobahn.spec
index e4c1596..fd6b1cb 100644
--- a/python-autobahn.spec
+++ b/python-autobahn.spec
@@ -25,6 +25,8 @@ License:        MIT
 Group:          Development/Languages/Python
 URL:            https://github.com/crossbario/autobahn-python
 Source:         https://files.pythonhosted.org/packages/source/a/autobahn/autobahn-%{version}.tar.gz
+# PATCH-FIX-OPENSUSE bmwiedemann -- https://bugzilla.opensuse.org/show_bug.cgi?id=1100677
+Patch0:         reproducible.patch
 BuildRequires:  %{python_module PyNaCl >= 1.0.1}
 BuildRequires:  %{python_module PyQRCode >= 1.1}
 BuildRequires:  %{python_module Twisted >= 12.1.0}
@@ -87,6 +89,7 @@ asynchronous Remote Procedure Calls and Publish & Subscribe on top of WebSocket.
 
 %prep
 %setup -q -n autobahn-%{version}
+%patch0 -p1
 
 %build
 export AUTOBAHN_USE_NVX=true
diff --git a/reproducible.patch b/reproducible.patch
new file mode 100644
index 0000000..700ccbe
--- /dev/null
+++ b/reproducible.patch
@@ -0,0 +1,24 @@
+Author: Bernhard M. Wiedemann <bwiedemann suse de>
+Date: 2019-04-08
+
+This bug was found while working on reproducible builds for openSUSE.
+
+Without this patch, binaries would use SSE4.1 instructions if the build
+machine's CPU had it available.
+This could cause 'invalid instruction' faults on older user machines.
+
+https://bugzilla.opensuse.org/show_bug.cgi?id=1100677
+
+Index: autobahn-19.3.3/autobahn/nvx/_utf8validator.py
+===================================================================
+--- autobahn-19.3.3.orig/autobahn/nvx/_utf8validator.py
++++ autobahn-19.3.3/autobahn/nvx/_utf8validator.py
+@@ -52,7 +52,7 @@ with open(os.path.join(os.path.dirname(_
+         "_nvx_utf8validator",
+         c_source,
+         libraries=[],
+-        extra_compile_args=['-std=c99', '-Wall', '-Wno-strict-prototypes', '-O3', '-march=native']
++        extra_compile_args=['-std=c99', '-Wall', '-Wno-strict-prototypes', '-O3']
+     )
+ 
+