diff --git a/superxas_bec/devices/falcon_direct.py b/superxas_bec/devices/falcon_direct.py
index e7522ce..705f731 100644
--- a/superxas_bec/devices/falcon_direct.py
+++ b/superxas_bec/devices/falcon_direct.py
@@ -190,9 +190,7 @@ class FalconSuperXASDirect(PSIDeviceBase, FalconControlDirect):
         Called after the device is connected and its signals are connected.
         Default values for signals should be set here.
         """
-        self.mca1.spectrum.subscribe(
-            self._update_preview, run=False, run_kwargs={"event_type": "value"}
-        )
+        self.mca1.spectrum.subscribe(self._update_preview, run=False)
 
     def _update_preview(self, old_value, value, **kwargs) -> None:
         """Update the preview signal with the latest spectrum data."""