diff --git a/proxy/socks/udp.go b/proxy/socks/udp.go
index e7400cbf..31400f53 100644
--- a/proxy/socks/udp.go
+++ b/proxy/socks/udp.go
@@ -66,5 +66,8 @@ func (server *SocksServer) handlePacket(conn *net.UDPConn, packet v2net.Packet,
 		request.Data = data
 		udpMessage := request.Bytes(nil)
 		nBytes, err := conn.WriteToUDP(udpMessage, clientAddr)
+    if err != nil {
+      log.Error("Socks failed to write UDP message (%d bytes) to %s: %v", nBytes, clientAddr.String(), err)
+    }
 	}
 }