diff -r 5581eb3d07e1 -r 8d48ef5efb59 MozillaFirefox/firefox-esr.spec
--- a/MozillaFirefox/firefox-esr.spec	Fri Apr 28 19:40:59 2017 +0200
+++ b/MozillaFirefox/firefox-esr.spec	Fri Apr 28 19:49:33 2017 +0200
@@ -29,7 +29,7 @@
 %if 0%{?suse_version} > 1320
 %define firefox_use_gtk3 1
 %ifarch %ix86 x86_64
-%define firefox_use_rust 1
+%define firefox_use_rust 0
 %endif
 %endif
 
@@ -91,8 +91,8 @@
 BuildRequires:  xorg-x11-libXt-devel
 BuildRequires:  yasm
 BuildRequires:  zip
+BuildRequires:  pkgconfig(libffi)
 BuildRequires:  pkgconfig(libpulse)
-BuildRequires:  pkgconfig(libffi)
 %if 0%{?firefox_use_gtk3}
 BuildRequires:  pkgconfig(glib-2.0)
 BuildRequires:  pkgconfig(gobject-2.0)