diff --git a/DSView/pv/dialogs/calibration.cpp b/DSView/pv/dialogs/calibration.cpp
index 2f802db9..d6516429 100644
--- a/DSView/pv/dialogs/calibration.cpp
+++ b/DSView/pv/dialogs/calibration.cpp
@@ -317,6 +317,10 @@ void Calibration::on_abort()
                        Qt::WindowMinimizeButtonHint | Qt::WindowMaximizeButtonHint);
     dlg.setCancelButton(NULL);
 
+    QFutureWatcher<void> watcher;
+    connect(&watcher,SIGNAL(finished()),&dlg,SLOT(cancel()));
+    watcher.setFuture(future);
+
     dlg.exec();
     this->show();
 }