diff --git a/luci-app-mosdns/root/etc/init.d/mosdns b/luci-app-mosdns/root/etc/init.d/mosdns
index 61cbce5..3f22ee3 100755
--- a/luci-app-mosdns/root/etc/init.d/mosdns
+++ b/luci-app-mosdns/root/etc/init.d/mosdns
@@ -27,6 +27,7 @@ CRON_FILE=/etc/crontabs/root
 
 get_config() {
 	config_get enabled $1 enabled 0
+	config_get adblock $1 adblock 0
 	config_get ad_source $1 ad_source ""
 	config_get cache_size $1 cache_size 200000
 	config_get cache_survival_time $1 cache_survival_time 259200
@@ -47,7 +48,7 @@ get_config() {
 
 init_yaml() {
 	tmpdir=$(mktemp -d) || exit 1
-	adblock=$(/usr/share/mosdns/mosdns.sh ad)
+	adlist=$(/usr/share/mosdns/mosdns.sh ad)
 	[ $enable_pipeline = 1 ] && enable_pipeline=true || enable_pipeline=false
 	local_dns=$(/usr/share/mosdns/mosdns.sh dns | xargs -n1 echo "        - addr:")
 	remote_dns=$(echo $remote_dns | awk '{for(i=1;i<=NF;i++)printf "%s- addr: %s\n%s  enable_pipeline: '${enable_pipeline}'\n",s,$i,s}' s='        ')
@@ -56,7 +57,7 @@ init_yaml() {
 	s,cache_survival_time,$cache_survival_time,g; \
 	s,minimal_ttl_custom,$minimal_ttl_custom,g; \
 	s,maximum_ttl_custom,$maximum_ttl_custom,g; \
-	s,adblock,$adblock,g;s,remote_dns_pipeline,$enable_pipeline,g" \
+	s,adblock,$adlist,g;s,remote_dns_pipeline,$enable_pipeline,g" \
 	/usr/share/mosdns/default.yaml > $CONF
 	[ "$custom_local_dns" -eq 0 ] && sed -i "/bootstrap/d" $CONF || \
 	sed -i "s,bootstrap_dns,$bootstrap_dns,g" $CONF
@@ -127,8 +128,7 @@ start_service() {
 	delcron
 	setcron
 	[ "${CONF}" = "/etc/mosdns/config.yaml" ] && init_yaml
-	cat /dev/null > $(/usr/share/mosdns/mosdns.sh logfile)
-	[ ! "$ad_source" = "geosite.dat" ] && cat /dev/null > /etc/mosdns/rule/adlist.txt
+	:> $(/usr/share/mosdns/mosdns.sh logfile)
 	procd_open_instance mosdns
 	procd_set_param command $PROG start -c "$CONF"
 	procd_set_param user root
@@ -136,13 +136,15 @@ start_service() {
 	procd_set_param stderr 1
 	procd_set_param respawn "${respawn_threshold:-3600}" "${respawn_timeout:-5}" "${respawn_retry:-5}"
 	procd_close_instance mosdns
-
 	[ "$redirect" -ne 1 ] && [ -f "/etc/mosdns/redirect.lock" ] && restore_setting
 	[ "$redirect" -eq 1 ] && redirect_setting
-
 	reload_others
-
-	[ ! "$ad_source" = "geosite.dat" ] && /usr/share/mosdns/mosdns.sh adlist_update &> /dev/null &
+	update_list=0
+	[ "$adblock" -eq 1 ] && [ "$ad_source" != "geosite.dat" ] && {
+		[ -s "/etc/mosdns/rule/adlist.txt" ] && [ -f "/etc/mosdns/rule/.ad_source" ] && url_adlist=$(cat /etc/mosdns/rule/.ad_source) || update_list=1
+		[ "$ad_source" != "$url_adlist" ] && update_list=1
+	}
+	[ "$update_list" -eq 1 ] && /usr/share/mosdns/mosdns.sh adlist_update &> /dev/null &
 }
 
 stop_service() {
diff --git a/luci-app-mosdns/root/usr/share/mosdns/mosdns.sh b/luci-app-mosdns/root/usr/share/mosdns/mosdns.sh
index e05d90d..25a6707 100755
--- a/luci-app-mosdns/root/usr/share/mosdns/mosdns.sh
+++ b/luci-app-mosdns/root/usr/share/mosdns/mosdns.sh
@@ -56,6 +56,7 @@ adlist_update() (
 		exit 1
 	else
 		\cp "$AD_TMPDIR/adlist.txt" /etc/mosdns/rule/adlist.txt
+		echo "$ad_source" > /etc/mosdns/rule/.ad_source
 		rm -rf "$AD_TMPDIR"
 	fi
 )