diff --git a/tunsocks.sh b/tunsocks.sh
index 56a2e53..f51e532 100755
--- a/tunsocks.sh
+++ b/tunsocks.sh
@@ -8,38 +8,36 @@ nsname="$1"
 device="tun${nsname}"
 ns="${nsname}ns"
 
-if [ "$2" = use_env ];then
-		proxy="$SOCKS_PROXY"
-		shift
+if [ "$2" = use_env ]; then
+	proxy="$SOCKS_PROXY"
+	shift
 else
-		proxy="socks5:///run/nnss-${nsname}/sock"
+	proxy="socks5:///run/nnss-${nsname}/sock"
 fi
 
-setup()
-{
-		ip tuntap add mode tun dev "$device"
+setup() {
+	ip tuntap add mode tun dev "$device"
 
-		/usr/bin/tun2socks -device "$device" -proxy "$proxy" &
-		echo "$!" > "$pidfile"
-		sleep 5
+	/usr/bin/tun2socks -device "$device" -proxy "$proxy" &
+	echo "$!" >"$pidfile"
+	sleep 5
 
-		ip netns add "$ns"
-		ip link set "$device" netns "$ns"
+	ip netns add "$ns"
+	ip link set "$device" netns "$ns"
 
-		ip -n "$ns" addr add 198.19.1.1/30 dev "$device"
-		ip -n "$ns" link set dev "$device" up
-		ip -n "$ns" route add default via 198.19.1.1 dev "$device" metric 100
-		ip -n "$ns" link set lo up
-		systemd-notify --ready
-		wait
+	ip -n "$ns" addr add 198.19.1.1/30 dev "$device"
+	ip -n "$ns" link set dev "$device" up
+	ip -n "$ns" route add default via 198.19.1.1 dev "$device" metric 100
+	ip -n "$ns" link set lo up
+	systemd-notify --ready
+	wait
 }
 
-cleanup()
-{
-		ip tuntap del mode tun dev "$device" || true
-		kill "$(cat "$pidfile")"
-		ip -n "$ns" tuntap del mode tun dev "$device"
-		ip netns del "$ns"
+cleanup() {
+	ip tuntap del mode tun dev "$device" || true
+	kill "$(cat "$pidfile")"
+	ip -n "$ns" tuntap del mode tun dev "$device"
+	ip netns del "$ns"
 }
 
 $2