diff --git a/transport/wireguard/device_stack_stub.go b/transport/wireguard/device_stack_stub.go
index 6f2e6230..cc6d273c 100644
--- a/transport/wireguard/device_stack_stub.go
+++ b/transport/wireguard/device_stack_stub.go
@@ -2,7 +2,11 @@
 
 package wireguard
 
-import "github.com/sagernet/sing-tun"
+import (
+	"net/netip"
+
+	"github.com/sagernet/sing-tun"
+)
 
 func NewStackDevice(localAddresses []netip.Prefix, mtu uint32) (Device, error) {
 	return nil, tun.ErrGVisorNotIncluded