diff --git a/src/cli/cli.go b/src/cli/cli.go
index d75fea9..dee5704 100644
--- a/src/cli/cli.go
+++ b/src/cli/cli.go
@@ -220,7 +220,7 @@ func relay(c *cli.Context) (err error) {
 			continue
 		}
 		go func(portStr string) {
-			err = tcp.Run(debugString, portStr)
+			err = tcp.Run(debugString, portStr, c.GlobalString("ports"))
 			if err != nil {
 				panic(err)
 			}
diff --git a/src/croc/croc.go b/src/croc/croc.go
index 61add9f..584f165 100644
--- a/src/croc/croc.go
+++ b/src/croc/croc.go
@@ -236,7 +236,7 @@ func (c *Client) Send(options TransferOptions) (err error) {
 				if c.Options.Debug {
 					debugString = "debug"
 				}
-				err = tcp.Run(debugString, portStr)
+				err = tcp.Run(debugString, portStr, strings.Join(c.Options.RelayPorts, ","))
 				if err != nil {
 					panic(err)
 				}
diff --git a/src/croc/croc_test.go b/src/croc/croc_test.go
index 746904c..267a2d0 100644
--- a/src/croc/croc_test.go
+++ b/src/croc/croc_test.go
@@ -12,7 +12,7 @@ import (
 func TestCroc(t *testing.T) {
 	defer log.Flush()
 
-	go tcp.Run("debug", "8081")
+	go tcp.Run("debug", "8081", "8082,8083,8084,8085")
 	go tcp.Run("debug", "8082")
 	go tcp.Run("debug", "8083")
 	go tcp.Run("debug", "8084")