diff --git a/tunnel/tunnel.go b/tunnel/tunnel.go
index 07284880..f9e13016 100644
--- a/tunnel/tunnel.go
+++ b/tunnel/tunnel.go
@@ -333,9 +333,9 @@ func match(metadata *C.Metadata) (C.Proxy, C.Rule, error) {
 		if !processFound && rule.ShouldFindProcess() {
 			processFound = true
 
-			srcPort, err := strconv.Atoi(metadata.SrcPort)
+			srcPort, err := strconv.ParseUint(metadata.SrcPort, 10, 16)
 			if err == nil {
-				path, err := P.FindProcessName(metadata.NetWork.String(), metadata.SrcIP, srcPort)
+				path, err := P.FindProcessName(metadata.NetWork.String(), metadata.SrcIP, int(srcPort))
 				if err != nil {
 					log.Debugln("[Process] find process %s: %v", metadata.String(), err)
 				} else {