diff --git a/main.cpp b/main.cpp
index a515a6f..ecda1b3 100644
--- a/main.cpp
+++ b/main.cpp
@@ -16,7 +16,7 @@ static void updateDC(hwinf const *hw) {
     qDebug() << "ENTER";
     //return;
     for (int i=0; i< 1;++i) {
-        hw->dc_updateDC("dc2c4.bin", "115200", "ttyUSB0");
+        hw->dc_updateDC("dc2c4.bin", "115200", "ttymxc2");
         std::this_thread::sleep_for(std::chrono::milliseconds(3000));
     }
     qDebug() << "LEAVE";
@@ -37,6 +37,7 @@ int main(int argc, char *argv[])
     hwinf const* hw = plugin.loadPlugin();
     if (!hw) {
         qCritical() << "Cannot load plugin";
+        return -1;
     }
 
     std::thread t(updateDC, hw);