diff --git a/firefox-kde/PKGBUILD b/firefox-kde/PKGBUILD
index 1d79e60..2d1c750 100644
--- a/firefox-kde/PKGBUILD
+++ b/firefox-kde/PKGBUILD
@@ -1,6 +1,6 @@
 pkgname=firefox-kde
 pkgver=50.1.0
-pkgrel=3
+pkgrel=4
 pkgdesc="Standalone web browser from mozilla.org with OpenSUSE patch, integrate better with KDE"
 _kmozillahelper_commit=0219317ccd59d0fb8dc3d39ca351234c7ca7499e
 arch=('x86_64')
@@ -79,7 +79,7 @@ source=("https://download-installer.cdn.mozilla.net/pub/firefox/releases/${pkgve
 )
 sha1sums=('6024dc49a566ed6296ad6cd707a199d41f090176'
           'SKIP'
-          '24b734ae99cef96983d6b09b5f7c64e70a70376a'
+          '90177c956236eb832a4d19eac7f0835150a889f6'
           '1a8ecc6d2cfd97791d8182882a74929f2a7289e9'
           '693b54b9206ad854e4d75cbbf393029b77e82153'
           '6762b62baa202e944fdacb9b7ac85ed3a30c8562'
diff --git a/firefox-kde/mozconfig b/firefox-kde/mozconfig
index 33000b0..a69d171 100644
--- a/firefox-kde/mozconfig
+++ b/firefox-kde/mozconfig
@@ -12,10 +12,12 @@ ac_add_options --enable-skia
 
 # Release branding
 ac_add_options --enable-official-branding
-# gtk2 avoid crash on select file to open
+ac_add_options --enable-update-channel=release
+MOZ_ADDON_SIGNING=1
+MOZ_REQUIRE_SIGNING=1
+
+# Use gtk2 to avoid crash on select file to open
 ac_add_options --enable-default-toolkit=cairo-gtk2
-ac_add_options MOZ_ADDON_SIGNING=1
-ac_add_options MOZ_REQUIRE_SIGNING=1
 
 # System libraries
 ac_add_options --with-system-nspr