diff --git a/protocol/types.go b/protocol/types.go
index e3473f3..a0d8e33 100644
--- a/protocol/types.go
+++ b/protocol/types.go
@@ -43,7 +43,7 @@ const (
 	HTTP_TUNNEL_REDIR_DISABLE_ALL       = 0x40000000
 	HTTP_TUNNEL_REDIR_DISABLE_DRIVE     = 0x01
 	HTTP_TUNNEL_REDIR_DISABLE_PRINTER   = 0x02
-	HTTP_TUNNEL_REDIR_DISABLE_PORT      = 0x03
+	HTTP_TUNNEL_REDIR_DISABLE_PORT      = 0x04
 	HTTP_TUNNEL_REDIR_DISABLE_CLIPBOARD = 0x08
 	HTTP_TUNNEL_REDIR_DISABLE_PNP       = 0x10
 )