diff --git a/net/portmapper/upnp.go b/net/portmapper/upnp.go
index 34140e947..0bce7b9cf 100644
--- a/net/portmapper/upnp.go
+++ b/net/portmapper/upnp.go
@@ -574,7 +574,6 @@ func (c *Client) getUPnPPortMapping(
 		c.mu.Lock()
 		defer c.mu.Unlock()
 		c.mapping = upnp
-		c.localPort = externalAddrPort.Port()
 		return upnp.external, true
 	}