diff --git a/mantidimaging/gui/windows/live_viewer/presenter.py b/mantidimaging/gui/windows/live_viewer/presenter.py
index 34984d032b0..b26391c58b9 100644
--- a/mantidimaging/gui/windows/live_viewer/presenter.py
+++ b/mantidimaging/gui/windows/live_viewer/presenter.py
@@ -46,7 +46,8 @@ def __init__(self, view: LiveViewerWindowView, main_window: MainWindowView):
 
     def close(self) -> None:
         """Close the window."""
-        self.model.close()
+        if self.model is not None:
+            self.model.close()
         self.model = None  # type: ignore # Presenter instance to be destroyed -type can be inconsistent
         self.view = None  # type: ignore # Presenter instance to be destroyed -type can be inconsistent