diff --git a/transport/internet/kcp/connection.go b/transport/internet/kcp/connection.go
index 30bb455e..23666bf0 100644
--- a/transport/internet/kcp/connection.go
+++ b/transport/internet/kcp/connection.go
@@ -80,7 +80,7 @@ func NewConnection(conv uint32, writerCloser io.WriteCloser, local *net.UDPAddr,
 	mtu := uint32(effectiveConfig.Mtu - block.HeaderSize() - headerSize)
 	conn.kcp = NewKCP(conv, mtu, conn.output)
 	conn.kcp.WndSize(effectiveConfig.GetSendingWindowSize(), effectiveConfig.GetReceivingWindowSize())
-	conn.kcp.NoDelay(1, 20, 2, effectiveConfig.Congestion)
+	conn.kcp.NoDelay(1, effectiveConfig.Tti, 2, effectiveConfig.Congestion)
 	conn.kcp.current = conn.Elapsed()
 
 	go conn.updateTask()