diff --git a/qt/draw_widget.cpp b/qt/draw_widget.cpp
index 318e40b841..7eff7d7312 100644
--- a/qt/draw_widget.cpp
+++ b/qt/draw_widget.cpp
@@ -88,6 +88,8 @@ namespace qt
   void DrawWidget::PrepareShutdown()
   {
     KillPressTask();
+    ASSERT(isValid(), ());
+    makeCurrent();
     m_framework->PrepareToShutdown();
     m_videoTimer.reset();
   }