diff --git a/go.mod b/go.mod
index 161a993..f5ed098 100644
--- a/go.mod
+++ b/go.mod
@@ -20,8 +20,8 @@ require (
 	github.com/tjfoc/gmsm v1.0.1 // indirect
 	github.com/xtaci/kcp-go v5.0.7+incompatible
 	golang.org/x/crypto v0.0.0-20190313024323-a1f597ede03a
-	golang.org/x/net v0.0.0-20190313220215-9f648a60d977 // indirect
-	golang.org/x/sys v0.0.0-20190316082340-a2f829d7f35f // indirect
+	golang.org/x/net v0.0.0-20190318221613-d196dffd7c2b // indirect
+	golang.org/x/sys v0.0.0-20190318195719-6c81ef8f67ca // indirect
 )
 
 // Replace dependency modules with local developing copy
diff --git a/go.sum b/go.sum
index 01c4203..643e92c 100644
--- a/go.sum
+++ b/go.sum
@@ -50,6 +50,8 @@ golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJV
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190313220215-9f648a60d977 h1:actzWV6iWn3GLqN8dZjzsB+CLt+gaV2+wsxroxiQI8I=
 golang.org/x/net v0.0.0-20190313220215-9f648a60d977/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190318221613-d196dffd7c2b h1:ZWpVMTsK0ey5WJCu+vVdfMldWq7/ezaOcjnKWIHWVkE=
+golang.org/x/net v0.0.0-20190318221613-d196dffd7c2b/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190302025703-b6889370fb10 h1:xQJI9OEiErEQ++DoXOHqEpzsGMrAv2Q2jyCpi7DmfpQ=
 golang.org/x/sys v0.0.0-20190302025703-b6889370fb10/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -75,4 +77,6 @@ golang.org/x/sys v0.0.0-20190312061237-fead79001313 h1:pczuHS43Cp2ktBEEmLwScxgjW
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190316082340-a2f829d7f35f h1:yCrMx/EeIue0+Qca57bWZS7VX6ymEoypmhWyPhz0NHM=
 golang.org/x/sys v0.0.0-20190316082340-a2f829d7f35f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190318195719-6c81ef8f67ca h1:o2TLx1bGN3W+Ei0EMU5fShLupLmTOU95KvJJmfYhAzM=
+golang.org/x/sys v0.0.0-20190318195719-6c81ef8f67ca/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
diff --git a/proxy/udptun/udptun.go b/proxy/udptun/udptun.go
index f170dc6..d8e22c3 100644
--- a/proxy/udptun/udptun.go
+++ b/proxy/udptun/udptun.go
@@ -75,7 +75,6 @@ func (s *UDPTun) ListenAndServe() {
 
 		v, ok := nm.Load(raddr.String())
 		if !ok && v == nil {
-
 			pc, _, err = s.dialer.DialUDP("udp", s.taddr)
 			if err != nil {
 				log.F("[udptun] remote dial error: %v", err)
diff --git a/strategy/strategy.go b/strategy/strategy.go
index 31cde0c..87ebef8 100644
--- a/strategy/strategy.go
+++ b/strategy/strategy.go
@@ -236,7 +236,7 @@ func (d *Dialer) check(i int) {
 
 			if readTime > time.Duration(d.config.CheckTimeout)*time.Second {
 				f.Disable()
-				log.F("[check] %s(%d) -> %s, DISABLED. connect timeout: %s", f.Addr(), f.Priority(), d.config.CheckWebSite, readTime)
+				log.F("[check] %s(%d) -> %s, DISABLED. check timeout: %s", f.Addr(), f.Priority(), d.config.CheckWebSite, readTime)
 			} else {
 				retry = 2
 				f.Enable()