diff --git a/csaxs_bec/devices/epics/mcs_card/mcs_card_csaxs.py b/csaxs_bec/devices/epics/mcs_card/mcs_card_csaxs.py
index 37c18bb..1fb9338 100644
--- a/csaxs_bec/devices/epics/mcs_card/mcs_card_csaxs.py
+++ b/csaxs_bec/devices/epics/mcs_card/mcs_card_csaxs.py
@@ -417,7 +417,7 @@ class MCSCardCSAXS(PSIDeviceBase, MCSCard):
             if signal is None:
                 logger.error(f"Called without 'obj' in kwargs: {kwargs}")
                 return
-            signal: AsyncSignal
+            signal: EpicsSignalRO
             attr_name = signal.attr_name
             mca_channel = getattr(self, attr_name, None)
             if mca_channel is None: