diff --git a/das-dn/third_party/AdsLib/AdsDevice.cpp b/das-dn/third_party/AdsLib/AdsDevice.cpp
index 4d3c20fe..a2ec1a23 100644
--- a/das-dn/third_party/AdsLib/AdsDevice.cpp
+++ b/das-dn/third_party/AdsLib/AdsDevice.cpp
@@ -7,6 +7,8 @@
 #include "AdsException.h"
 #include "AdsLib.h"
 #include "Log.h"
+#include <error.h>
+#include <string.h>
 #include <limits>
 
 namespace Beckhoff
@@ -18,7 +20,7 @@ static AmsNetId* Connect(AmsNetId ams, const char* ip)
     const auto error = ConnectTarget(ams, ip);
     if (error) {
         if(error == ROUTERERR_PORTALREADYINUSE){
-            LOG_INFO("Connection["<<ip<<"] has been built.");
+            LOG_INFO("Connection[" << ip << "] has been built.");
             return new AmsNetId { ams };
         }
             
@@ -166,7 +168,7 @@ AdsDeviceState AdsDevice::GetState() const
     if(m_Connected == true){
         auto error = AdsSyncReadStateReqEx(GetLocalPort(), &m_Addr, &state[0], &state[1]);
         if (error) {
-            LOG_ERROR("AdsDevice can not read device state.");
+            LOG_ERROR("AdsDevice can not read device state. \n" << error << strerror(errno));
             //throw AdsException(error);
             return {static_cast<ADSSTATE>(state[0]), static_cast<ADSSTATE>(state[1])};
         }