diff --git a/superxas_bec/devices/timepix/timepix.py b/superxas_bec/devices/timepix/timepix.py
index 5eaca16..e82f8a8 100644
--- a/superxas_bec/devices/timepix/timepix.py
+++ b/superxas_bec/devices/timepix/timepix.py
@@ -561,7 +561,7 @@ class Timepix(PSIDeviceBase, TimePixControl):
             self.cam.acquire_busy, [ACQUIRESTATUS.DONE, ACQUIRESTATUS.ACQUIRING, ACQUIRESTATUS.DONE]
         )
         status_backend_on_trigger = DeviceStatus(self)
-        status_backend_on_trigger.add_callback(self.trigger_callback)
+        status_backend_on_trigger.add_callback(self._trigger_callback)
         status_backend_collect_started = DeviceStatus(self)
 
         # Add Collect callback