diff --git a/src/gui/mainwindow.cpp b/src/gui/mainwindow.cpp
index 40911a9..28e4525 100644
--- a/src/gui/mainwindow.cpp
+++ b/src/gui/mainwindow.cpp
@@ -130,7 +130,6 @@ void MainWindow::init()
     loadConfig();
 
     show();
-    ExternalCommand::setParentWidget(this);
     pmWidget().init(&operationStack());
 
     scanDevices();