diff --git a/sysservice/httpservice/httpservice.go b/sysservice/httpservice/httpservice.go
index 0f2c8ab..bccbdc1 100644
--- a/sysservice/httpservice/httpservice.go
+++ b/sysservice/httpservice/httpservice.go
@@ -83,6 +83,7 @@ type HttpSession struct {
 	sessionDone  chan *HttpSession
 }
 
+// Deprecated: replace it with the GinModule
 type HttpService struct {
 	service.Service
 
diff --git a/sysservice/tcpservice/tcpservice.go b/sysservice/tcpservice/tcpservice.go
index bcdf0c5..b904b8d 100644
--- a/sysservice/tcpservice/tcpservice.go
+++ b/sysservice/tcpservice/tcpservice.go
@@ -14,6 +14,7 @@ import (
 	"time"
 )
 
+// Deprecated: replace it with the TcpModule
 type TcpService struct {
 	tcpServer network.TCPServer
 	service.Service
diff --git a/sysservice/wsservice/wsservice.go b/sysservice/wsservice/wsservice.go
index 7f3c7e3..cf03483 100644
--- a/sysservice/wsservice/wsservice.go
+++ b/sysservice/wsservice/wsservice.go
@@ -12,6 +12,7 @@ import (
 	"sync"
 )
 
+// Deprecated: replace it with the WSModule
 type WSService struct {
 	service.Service
 	wsServer network.WSServer