diff --git a/ping/ping.go b/ping/ping.go
index f373fe3..842514c 100644
--- a/ping/ping.go
+++ b/ping/ping.go
@@ -123,7 +123,7 @@ Approximate trip times:
 
 // CheckURI check uri
 func CheckURI(uri string) (schema, host string, port int, matched bool) {
-	const reExp = `^((?P<schema>((ht|f)tp(s?))|tcp)\://)?((([a-zA-Z0-9_\-]{2,}\.)+[a-zA-Z]{2,})|((?:(?:25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)((\.?\d)\.)){4})|(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9]))(:([0-9]+))?(/[a-zA-Z0-9\-\._\?\,\'/\\\+&amp;%\$#\=~]*)?$`
+	const reExp = `^((?P<schema>((ht|f)tp(s?))|tcp)\://)?((([a-zA-Z0-9_\-]+\.)+[a-zA-Z]{2,})|((?:(?:25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)((\.?\d)\.)){4})|(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9]))(:([0-9]+))?(/[a-zA-Z0-9\-\._\?\,\'/\\\+&amp;%\$#\=~]*)?$`
 	pattern := regexp.MustCompile(reExp)
 	res := pattern.FindStringSubmatch(uri)
 	if len(res) == 0 {