diff --git a/lib/channel/GwChannelList.cpp b/lib/channel/GwChannelList.cpp
index c736ae2..58b96b5 100644
--- a/lib/channel/GwChannelList.cpp
+++ b/lib/channel/GwChannelList.cpp
@@ -83,7 +83,7 @@ public:
 };
 
 template<typename T>
-    class SerialWrapper : public GwChannelList::SerialWrapperBase{
+    class SerialWrapper : public GwSerial::SerialWrapperBase{
         private:
         template<class C>
         void beginImpl(C *s,unsigned long baud, uint32_t config=SERIAL_8N1, int8_t rxPin=-1, int8_t txPin=-1){}
@@ -184,7 +184,7 @@ void GwChannelList::addSerial(int id, int rx, int tx, int type){
     }
     LOG_DEBUG(GwLog::ERROR,"invalid serial config with id %d",id);
 }
-void GwChannelList::addSerial(GwChannelList::SerialWrapperBase *stream,int type,int rx,int tx){
+void GwChannelList::addSerial(GwSerial::SerialWrapperBase *stream,int type,int rx,int tx){
     const char *mode=nullptr;
     switch (type)
     {
@@ -207,7 +207,7 @@ void GwChannelList::addSerial(GwChannelList::SerialWrapperBase *stream,int type,
     }
     addSerial(stream,mode,rx,tx);
 }
-void GwChannelList::addSerial(GwChannelList::SerialWrapperBase *serialStream,const String &mode,int rx,int tx){
+void GwChannelList::addSerial(GwSerial::SerialWrapperBase *serialStream,const String &mode,int rx,int tx){
     int id=serialStream->getId();
     for (auto &&it:theChannels){
         if (it->isOwnSource(id)){
@@ -251,7 +251,7 @@ void GwChannelList::addSerial(GwChannelList::SerialWrapperBase *serialStream,con
     LOG_DEBUG(GwLog::DEBUG,"serial set up: mode=%s,rx=%d,canRead=%d,tx=%d,canWrite=%d",
         mode.c_str(),rx,(int)canRead,tx,(int)canWrite);
     serialStream->begin(logger,config->getInt(param->baud,115200),SERIAL_8N1,rx,tx);
-    GwSerial *serial = new GwSerial(logger, serialStream->getStream(), id, canRead);
+    GwSerial *serial = new GwSerial(logger, serialStream, canRead);
     LOG_DEBUG(GwLog::LOG, "starting serial %d ", id);
     GwChannel *channel = new GwChannel(logger, param->name, id);
     channel->setImpl(serial);
@@ -303,8 +303,9 @@ void GwChannelList::begin(bool fallbackSerial){
     GwChannel *channel=NULL;
     //usb
     if (! fallbackSerial){
-        GwSerial *usb=new GwSerial(NULL,&USBSerial,USB_CHANNEL_ID);
-        USBSerial.begin(config->getInt(config->usbBaud));
+        GwSerial::SerialWrapperBase *usbWrapper=new SerialWrapper<decltype(USBSerial)>(&USBSerial,USB_CHANNEL_ID);
+        usbWrapper->begin(NULL,config->getInt(config->usbBaud));
+        GwSerial *usb=new GwSerial(NULL,usbWrapper);
         logger->setWriter(new GwSerialLog(usb,config->getBool(config->usbActisense),getFlushTimeout(USBSerial)));
         logger->prefix="GWSERIAL:";
         channel=new GwChannel(logger,"USB",USB_CHANNEL_ID);
diff --git a/lib/channel/GwChannelList.h b/lib/channel/GwChannelList.h
index 373dc6a..6ca20f8 100644
--- a/lib/channel/GwChannelList.h
+++ b/lib/channel/GwChannelList.h
@@ -8,6 +8,7 @@
 #include "GWConfig.h"
 #include "GwJsonDocument.h"
 #include "GwApi.h"
+#include "GwSerial.h"
 #include <HardwareSerial.h>
 
 //NMEA message channels
@@ -23,12 +24,6 @@ class GwSocketServer;
 class GwTcpClient;
 class GwChannelList{
     private:
-    class SerialWrapperBase{
-        public:
-        virtual void begin(GwLog* logger,unsigned long baud, uint32_t config=SERIAL_8N1, int8_t rxPin=-1, int8_t txPin=-1)=0;
-        virtual Stream *getStream()=0;
-        virtual int getId()=0;
-    };
         GwLog *logger;
         GwConfigHandler *config;
         typedef std::vector<GwChannel *> ChannelList;
@@ -36,8 +31,8 @@ class GwChannelList{
         std::map<int,String> modes;
         GwSocketServer *sockets;
         GwTcpClient *client;
-        void addSerial(SerialWrapperBase *stream,const String &mode,int rx,int tx);
-        void addSerial(SerialWrapperBase *stream,int type,int rx,int tx);
+        void addSerial(GwSerial::SerialWrapperBase *stream,const String &mode,int rx,int tx);
+        void addSerial(GwSerial::SerialWrapperBase *stream,int type,int rx,int tx);
     public:
         void addSerial(int id, int rx, int tx, int type);
         GwChannelList(GwLog *logger, GwConfigHandler *config);
diff --git a/lib/serial/GwSerial.cpp b/lib/serial/GwSerial.cpp
index c810e58..28c8d34 100644
--- a/lib/serial/GwSerial.cpp
+++ b/lib/serial/GwSerial.cpp
@@ -40,10 +40,10 @@ class GwSerialStream: public Stream{
 
 
 
-GwSerial::GwSerial(GwLog *logger, Stream *s, int id,bool allowRead):serial(s)
+GwSerial::GwSerial(GwLog *logger, GwSerial::SerialWrapperBase *s, bool allowRead):serial(s)
 {
     LOG_DEBUG(GwLog::DEBUG,"creating GwSerial %p id %d",this,id);
-    this->id=id;
+    this->id=s->getId();
     this->logger = logger;
     String bufName="Ser(";
     bufName+=String(id);
diff --git a/lib/serial/GwSerial.h b/lib/serial/GwSerial.h
index 5298bc6..f50149e 100644
--- a/lib/serial/GwSerial.h
+++ b/lib/serial/GwSerial.h
@@ -16,11 +16,27 @@ class GwSerial : public GwChannelInterface{
         int id=-1;
         int overflows=0;
         size_t enqueue(const uint8_t *data, size_t len,bool partial=false);
-        Stream *serial;
         bool availableWrite=false; //if this is false we will wait for availabkleWrite until we flush again
     public:
+        class SerialWrapperBase{
+        public:
+        virtual void begin(GwLog* logger,unsigned long baud, uint32_t config=SERIAL_8N1, int8_t rxPin=-1, int8_t txPin=-1)=0;
+        virtual int getId()=0;
+        virtual int available(){return getStream()->available();}
+        size_t readBytes(uint8_t *buffer, size_t length){
+            return getStream()->readBytes(buffer,length);
+        }
+        virtual int availableForWrite(void){
+            return getStream()->availableForWrite();
+        }
+        size_t write(const uint8_t *buffer, size_t size){
+            return getStream()->write(buffer,size);
+        }
+        private:
+        virtual Stream *getStream()=0;
+        };
         static const int bufferSize=200;
-        GwSerial(GwLog *logger,Stream *stream,int id,bool allowRead=true);
+        GwSerial(GwLog *logger,SerialWrapperBase *stream,bool allowRead=true);
         ~GwSerial();
         bool isInitialized();
         virtual size_t sendToClients(const char *buf,int sourceId,bool partial=false);
@@ -30,5 +46,7 @@ class GwSerial : public GwChannelInterface{
         virtual Stream *getStream(bool partialWrites);
         bool getAvailableWrite(){return availableWrite;}
     friend GwSerialStream;
+    private:
+        SerialWrapperBase *serial;
 };
 #endif
\ No newline at end of file