diff --git a/MozillaFirefox.changes b/MozillaFirefox.changes
index 8c9bdf1e..e1116ef9 100644
--- a/MozillaFirefox.changes
+++ b/MozillaFirefox.changes
@@ -26,6 +26,7 @@ Tue Apr  7 12:18:27 UTC 2020 - Wolfgang Rosenauer <wr@rosenauer.org>
   * rust-cbindgen >= 0.13.1
   * mozilla-nss >= 3.51
   * nodejs10 >= 10.19
+- fix build issue in libvpx for i586 via mozilla-bmo1622013.patch
 
 -------------------------------------------------------------------
 Mon Apr  6 11:19:24 UTC 2020 - Michel Normand <normand@linux.vnet.ibm.com>
diff --git a/MozillaFirefox.spec b/MozillaFirefox.spec
index 8a0acd12..591660f0 100644
--- a/MozillaFirefox.spec
+++ b/MozillaFirefox.spec
@@ -186,6 +186,7 @@ Patch19:        mozilla-bmo1512162.patch
 Patch20:        mozilla-fix-top-level-asm.patch
 Patch21:        mozilla-bmo1504834-part4.patch
 Patch22:        mozilla-bmo849632.patch
+Patch23:        mozilla-bmo1622013.patch
 # Firefox/browser
 Patch101:       firefox-kde.patch
 Patch102:       firefox-branded-icons.patch
@@ -321,6 +322,7 @@ cd $RPM_BUILD_DIR/%{srcname}-%{orig_version}
 %patch20 -p1
 %patch21 -p1
 %patch22 -p1
+%patch23 -p1
 # Firefox
 %patch101 -p1
 %patch102 -p1
diff --git a/mozilla-bmo1622013.patch b/mozilla-bmo1622013.patch
new file mode 100644
index 00000000..8016939c
--- /dev/null
+++ b/mozilla-bmo1622013.patch
@@ -0,0 +1,28 @@
+From be45ba20c33a8a247115e79fd4c1f3295d652ba3 Mon Sep 17 00:00:00 2001
+From: Jan Beich <jbeich@FreeBSD.org>
+Date: Mon, 23 Mar 2020 08:20:22 +0000
+Subject: [PATCH] Bug 1622013 - Build *_mmx.c files with -mmmx in bundled libvpx.
+
+diff --git a/media/libvpx/moz.build b/media/libvpx/moz.build
+index f3845941fe4de..47853d43408b7 100644
+--- a/media/libvpx/moz.build
++++ b/media/libvpx/moz.build
+@@ -97,16 +97,18 @@ if CONFIG['OS_TARGET'] == 'Android':
+     DEFINES['__linux__'] = True
+ 
+     SOURCES += [
+         '%%%s/sources/android/cpufeatures/cpu-features.c' % CONFIG['ANDROID_NDK'],
+     ]
+ 
+ for f in SOURCES:
+     if f.endswith('.c'):
++        if 'mmx.c' in f:
++            SOURCES[f].flags += ['-mmmx']
+         if 'sse2.c' in f:
+             SOURCES[f].flags += CONFIG['SSE2_FLAGS']
+         if 'ssse3.c' in f:
+             SOURCES[f].flags += ['-mssse3']
+         if 'sse4.c' in f:
+             SOURCES[f].flags += ['-msse4.1']
+         if 'avx.c' in f:
+             SOURCES[f].flags += ['-mavx']