diff --git a/pkgs/applications/networking/browsers/firefox/default.nix b/pkgs/applications/networking/browsers/firefox/default.nix
index a8ca59d0ed4..e510b329714 100644
--- a/pkgs/applications/networking/browsers/firefox/default.nix
+++ b/pkgs/applications/networking/browsers/firefox/default.nix
@@ -4,7 +4,7 @@
 , yasm, mesa, sqlite, unzip, makeWrapper, pysqlite
 , hunspell, libevent, libstartup_notification, libvpx
 , cairo, gstreamer, gst_plugins_base, icu, libpng, jemalloc, libpulseaudio
-, enableGTK3 ? false
+, enableGTK3 ? false, fetchpatch
 , debugBuild ? false
 , # If you want the resulting program to call itself "Firefox" instead
   # of "Shiretoko" or whatever, enable this option.  However, those
@@ -26,6 +26,17 @@ stdenv.mkDerivation rec {
     sha1 = "6ddda46bd6540ab3ae932fbb5ffec8e9a85cab13";
   };
 
+  patches = if !enableGTK3 then null else [(fetchpatch {
+    name = "crash_OTMC+GTK3.patch";
+    # backported from 40.1
+    # https://bugzilla.mozilla.org/show_bug.cgi?id=1127752
+    # https://bugzilla.redhat.com/show_bug.cgi?id=1256875
+    url = "http://pkgs.fedoraproject.org/cgit/firefox.git/plain/"
+      + "mozilla-1127752.patch?id=571fefe2c8f741b92c865e9122af56f6258b3fc1";
+    sha256 = "04yq4lcq8ln2fmknz4c0zah77wxqp2mcgr8pjx860dmcmzvyi3p5";
+  })];
+  patchFlags = "-p2";
+
   buildInputs =
     [ pkgconfig gtk perl zip libIDL libjpeg zlib bzip2
       python dbus dbus_glib pango freetype fontconfig xlibs.libXi