diff --git a/listener/tun/ipstack/gvisor/option/option.go b/listener/tun/ipstack/gvisor/option/option.go
index a2fb2851..88c26e62 100644
--- a/listener/tun/ipstack/gvisor/option/option.go
+++ b/listener/tun/ipstack/gvisor/option/option.go
@@ -1,5 +1,3 @@
-//go:build !no_gvisor
-
 package option
 
 import (
@@ -11,6 +9,8 @@ import (
 	"gvisor.dev/gvisor/pkg/tcpip/network/ipv6"
 	"gvisor.dev/gvisor/pkg/tcpip/stack"
 	"gvisor.dev/gvisor/pkg/tcpip/transport/tcp"
+
+	"github.com/Dreamacro/clash/common/pool"
 )
 
 const (
@@ -52,15 +52,15 @@ const (
 	tcpMinBufferSize = tcp.MinBufferSize
 
 	// tcpMaxBufferSize is the maximum permitted size of a send/recv buffer.
-	tcpMaxBufferSize = tcp.MaxBufferSize
+	tcpMaxBufferSize = pool.RelayBufferSize
 
 	// tcpDefaultBufferSize is the default size of the send buffer for
 	// a transport endpoint.
-	tcpDefaultSendBufferSize = tcp.DefaultSendBufferSize
+	tcpDefaultSendBufferSize = pool.RelayBufferSize
 
 	// tcpDefaultReceiveBufferSize is the default size of the receive buffer
 	// for a transport endpoint.
-	tcpDefaultReceiveBufferSize = tcp.DefaultReceiveBufferSize
+	tcpDefaultReceiveBufferSize = pool.RelayBufferSize
 )
 
 type Option func(*stack.Stack) error
diff --git a/listener/tun/ipstack/gvisor/tcp.go b/listener/tun/ipstack/gvisor/tcp.go
index b5dad6ea..4798cb7c 100644
--- a/listener/tun/ipstack/gvisor/tcp.go
+++ b/listener/tun/ipstack/gvisor/tcp.go
@@ -1,3 +1,5 @@
+//go:build !no_gvisor
+
 package gvisor
 
 import (