diff --git a/src/mainwindow.h b/src/mainwindow.h
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -44,7 +44,6 @@
 #include "snapshotmanager.h"
 #include "plotmanager.h"
 #include "plotmenu.h"
-#include "updatecheckdialog.h"
 #include "samplecounter.h"
 #include "datatextview.h"
 #include "bpslabel.h"
@@ -91,7 +90,6 @@ private:
     PlotControlPanel plotControlPanel;
     PlotMenu plotMenu;
     DataTextView textView;
-    UpdateCheckDialog updateCheckDialog;
     BPSLabel bpsLabel;
 
     void handleCommandLineOptions(const QCoreApplication &app);