diff --git a/app/navigatorview.cpp b/app/navigatorview.cpp
index 63917fa..a07a21a 100644
--- a/app/navigatorview.cpp
+++ b/app/navigatorview.cpp
@@ -32,6 +32,7 @@ void NavigatorView::updateMainViewportRegion()
 {
     if (m_mainView != nullptr) {
         m_viewportRegion = mapFromScene(m_mainView->mapToScene(m_mainView->rect()));
+        update();
     }
 }