diff --git a/connections/gvretserial.cpp b/connections/gvretserial.cpp
index 79d5a8d..efee5f3 100644
--- a/connections/gvretserial.cpp
+++ b/connections/gvretserial.cpp
@@ -8,9 +8,9 @@
 
 #include "gvretserial.h"
 
-GVRetSerial::GVRetSerial(QString portName, useTcp) :
-    useTcp(useTcp),
+GVRetSerial::GVRetSerial(QString portName, bool useTcp) :
     CANConnection(portName, CANCon::GVRET_SERIAL, 3, 4000, true),
+    useTcp(useTcp),
     mTimer(this) /*NB: set this as parent of timer to manage it from working thread */
 {
     qDebug() << "GVRetSerial()";