diff --git a/README.md b/README.md
index 07674af..4098991 100644
--- a/README.md
+++ b/README.md
@@ -180,8 +180,10 @@ forward=http://1.1.1.1:8080,socks5://2.2.2.2:1080
 # multiple upstream proxies forwad strategy
 strategy=rr
 
-# check address (to check whether a host is reachable via forward proxy)
-checkhost=www.apple.com:8443
+# Used to connect via forwarders, if the host is unreachable, the forwarder
+# will be set to disabled.
+# MUST be a HTTP website server address, format: HOST[:PORT]. HTTPS NOT SUPPORTED.
+checkwebsite=www.apple.com
 
 # check duration
 checkduration=30
diff --git a/proxy.go b/proxy.go
index ff66ce0..1111831 100644
--- a/proxy.go
+++ b/proxy.go
@@ -148,7 +148,7 @@ func check(p Proxy, webhost string, duration int) {
 			p.SetEnable(true)
 			retry = 2
 			dialTime := time.Since(startTime)
-			logf("proxy-check: %s -> %s, set to ENABLED. connect time: %s", p.Addr(), webhost, dialTime.String())
+			logf("proxy-check %s -> %s, set to ENABLED. connect time: %s", p.Addr(), webhost, dialTime.String())
 		} else {
 			p.SetEnable(false)
 			logf("proxy-check %s -> %s, set to DISABLED. server response: %s", p.Addr(), webhost, buf)