diff --git a/firefox-kde/PKGBUILD b/firefox-kde/PKGBUILD
index 9fe9052..2bdbff7 100644
--- a/firefox-kde/PKGBUILD
+++ b/firefox-kde/PKGBUILD
@@ -92,6 +92,10 @@ build_firefox() {
   cd "mozilla-release"
   patch -Np1 -i "../firefox-install-dir.patch"
 
+  # modify the patch to make it under extra
+  cp ../mozilla-kde.patch ../mozilla-kde-mod.patch
+  sed -i 's|\(\+\#define KMOZILLAHELPER "\)\(/usr/lib/mozilla/kmozillahelper"\)|\1/extra\2|' ../mozilla-kde-mod.patch
+
   # remove the new file, to make life easier with call makepkg multiple times
   rm -f content/media/gstreamer/nsGStreamerFormatHelper.cpp \
         content/media/gstreamer/GStreamerFormatHelper.cpp \
@@ -117,8 +121,8 @@ build_firefox() {
   patch -Np1 -i "../firefox-712763.patch" || return 1
   msg "apply mozilla-nongnome-proxies.patch"
   patch -Np1 -i "../mozilla-nongnome-proxies.patch" || return 1
-  msg "apply mozilla-kde.patch"
-  patch -Np1 -i "../mozilla-kde.patch" || return 1
+  msg "apply mozilla-kde-mod.patch"
+  patch -Np1 -i "../mozilla-kde-mod.patch" || return 1
   msg "apply firefox-kde.patch"
   patch -Np1 -i "../firefox-kde.patch" || return 1