diff --git a/transport/internet/udp/hub_linux_test.go b/transport/internet/udp/hub_linux_test.go
index 590ea23d9..265157a97 100644
--- a/transport/internet/udp/hub_linux_test.go
+++ b/transport/internet/udp/hub_linux_test.go
@@ -3,7 +3,6 @@
 package udp_test
 
 import (
-	"runtime"
 	"syscall"
 	"testing"