diff --git a/TimeoutSerial.cpp b/TimeoutSerial.cpp
index d59109d..77c7b68 100755
--- a/TimeoutSerial.cpp
+++ b/TimeoutSerial.cpp
@@ -25,6 +25,7 @@
 #include <iostream>
 #include <boost/bind.hpp>
 #include <sys/ioctl.h>
+#include <boost/log/trivial.hpp>
 
 using namespace std;
 using namespace boost;
@@ -241,6 +242,7 @@ void TimeoutSerial::readCompleted(const boost::system::error_code& error,
         return;
     }
 
+    BOOST_LOG_TRIVIAL(debug) << "Error =" << error.value() ;
     //In case a asynchronous operation is cancelled due to a timeout,
     //each OS seems to have its way to react.
     #ifdef _WIN32