diff --git a/box.go b/box.go
index dbba6389..8132e462 100644
--- a/box.go
+++ b/box.go
@@ -277,7 +277,7 @@ func (s *Box) Close() error {
 	}
 	for i, out := range s.outbounds {
 		errors = E.Append(errors, common.Close(out), func(err error) error {
-			return E.Cause(err, "close inbound/", out.Type(), "[", i, "]")
+			return E.Cause(err, "close outbound/", out.Type(), "[", i, "]")
 		})
 	}
 	if err := common.Close(s.router); err != nil {
diff --git a/outbound/wireguard.go b/outbound/wireguard.go
index dd194729..cdba9812 100644
--- a/outbound/wireguard.go
+++ b/outbound/wireguard.go
@@ -179,5 +179,6 @@ func (w *WireGuard) Close() error {
 	if w.device != nil {
 		w.device.Close()
 	}
-	return common.Close(w.tunDevice)
+	w.tunDevice.Close()
+	return nil
 }