diff --git a/bec_widgets/widgets/containers/auto_update/auto_updates.py b/bec_widgets/widgets/containers/auto_update/auto_updates.py
index b18bf13b..2d2ebe8d 100644
--- a/bec_widgets/widgets/containers/auto_update/auto_updates.py
+++ b/bec_widgets/widgets/containers/auto_update/auto_updates.py
@@ -258,7 +258,7 @@ class AutoUpdates(BECMainWindow):
         dev_x, dev_y = info.scan_report_devices[0], info.scan_report_devices[1]  # type:ignore
         dev_z = self.get_selected_device(info.readout_priority["monitored"])  # type:ignore
 
-        if dev_x or dev_y or dev_z is None:
+        if None in (dev_x, dev_y, dev_z):
             return
 
         # Clear the scatter waveform widget and plot the data