diff --git a/rhbz-1219542-s390-build.patch b/rhbz-1219542-s390-build.patch
index 4f38200..3734ce5 100644
--- a/rhbz-1219542-s390-build.patch
+++ b/rhbz-1219542-s390-build.patch
@@ -1,16 +1,16 @@
-diff -up mozilla-release/js/src/configure.in.opt mozilla-release/js/src/configure.in
---- mozilla-release/js/src/configure.in.opt	2015-05-04 02:43:23.000000000 +0200
-+++ mozilla-release/js/src/configure.in	2015-05-07 14:21:07.685405039 +0200
-@@ -1492,7 +1492,7 @@ case "$host" in
+diff -up firefox-43.0.3/js/src/configure.in.rhbz-1219542-s390 firefox-43.0.3/js/src/configure.in
+--- firefox-43.0.3/js/src/configure.in.rhbz-1219542-s390	2015-12-23 17:11:01.000000000 -0500
++++ firefox-43.0.3/js/src/configure.in	2016-01-03 08:08:27.139956990 -0500
+@@ -1466,7 +1466,7 @@ case "$host" in
+ 
  *-linux*|*-kfreebsd*-gnu|*-gnu*)
      HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
-     HOST_NSPR_MDCPUCFG='\"md/_linux.cfg\"'
 -    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
 +    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O1}"
      ;;
  
  *)
-@@ -1674,8 +1674,8 @@ ia64*-hpux*)
+@@ -1649,8 +1649,8 @@ ia64*-hpux*)
          # while; Intel recommends against using it.
          MOZ_OPTIMIZE_FLAGS="-O2"
      elif test "$GNU_CC" -o "$GNU_CXX"; then