diff --git a/src/packages/fff/fff-gateway/files/etc/uci-defaults/99-fff-gwupgrade b/src/packages/fff/fff-gateway/files/etc/uci-defaults/99-fff-gwupgrade
index 5396ba8a..3f857714 100644
--- a/src/packages/fff/fff-gateway/files/etc/uci-defaults/99-fff-gwupgrade
+++ b/src/packages/fff/fff-gateway/files/etc/uci-defaults/99-fff-gwupgrade
@@ -2,7 +2,7 @@
 # Copyright 2017 Tim Niemeyer
 # License GPLv3
 
-cat > /etc/sysupgrade.conf <<-__EOF__
+cat >> /etc/sysupgrade.conf <<-__EOF__
 /etc/config/gateway
 /www/hood/keyxchangev2data
 __EOF__
diff --git a/src/packages/fff/fff-sysupgrade/files/etc/uci-defaults/99-fff-sysupgrade b/src/packages/fff/fff-sysupgrade/files/etc/uci-defaults/99-fff-sysupgrade
index 7c92d7f5..61cbd76b 100644
--- a/src/packages/fff/fff-sysupgrade/files/etc/uci-defaults/99-fff-sysupgrade
+++ b/src/packages/fff/fff-sysupgrade/files/etc/uci-defaults/99-fff-sysupgrade
@@ -2,7 +2,7 @@
 # Copyright 2017 Tim Niemeyer
 # License GPLv3
 
-cat > /etc/sysupgrade.conf <<-__EOF__
+cat >> /etc/sysupgrade.conf <<-__EOF__
 /etc/shadow
 /etc/dropbear/dropbear_dss_host_key
 /etc/dropbear/dropbear_rsa_host_key