diff --git a/board/common/overlay/etc/init.d/S43firewall b/board/common/overlay/etc/init.d/S43firewall
index 3e049c18d8..6ff91fc33a 100755
--- a/board/common/overlay/etc/init.d/S43firewall
+++ b/board/common/overlay/etc/init.d/S43firewall
@@ -4,18 +4,11 @@ sys_conf="/etc/firewall.sh"
 boot_conf="/boot/firewall.sh"
 conf="/data/etc/firewall.sh"
 
-if ! [[ -f $conf ]]; then
-    if [[ -f $boot_conf ]]; then
-        cp $boot_conf $conf
-    elif [[ -f $sys_conf ]]; then
-        cp $sys_conf $conf
-    fi
-fi
-
-test -f $conf || exit 0
-
 test -n "$os_version" || source /etc/init.d/base
 
+prepare_conf $conf $sys_conf $boot_conf
+test -f $conf || exit 0
+
 start() {
     msg_begin "Starting firewall"