diff --git a/transport/snell/snell.go b/transport/snell/snell.go
index fe3e4ee0..4560c73c 100644
--- a/transport/snell/snell.go
+++ b/transport/snell/snell.go
@@ -264,7 +264,7 @@ func (pc *packetConn) WriteTo(b []byte, addr net.Addr) (int, error) {
 	pc.wMux.Lock()
 	defer pc.wMux.Unlock()
 
-	return WritePacket(pc, socks5.ParseAddr(addr.String()), b)
+	return WritePacket(pc, socks5.ParseAddrToSocksAddr(addr), b)
 }
 
 func (pc *packetConn) ReadFrom(b []byte) (int, net.Addr, error) {
diff --git a/transport/trojan/trojan.go b/transport/trojan/trojan.go
index 73b09dbc..62fa2d4e 100644
--- a/transport/trojan/trojan.go
+++ b/transport/trojan/trojan.go
@@ -136,7 +136,7 @@ type PacketConn struct {
 }
 
 func (pc *PacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
-	return WritePacket(pc, socks5.ParseAddr(addr.String()), b)
+	return WritePacket(pc, socks5.ParseAddrToSocksAddr(addr), b)
 }
 
 func (pc *PacketConn) ReadFrom(b []byte) (int, net.Addr, error) {