diff --git a/csaxs_bec/scans/flomni_fermat_scan_v4.py b/csaxs_bec/scans/flomni_fermat_scan_v4.py
index c35d591..c9aedd3 100644
--- a/csaxs_bec/scans/flomni_fermat_scan_v4.py
+++ b/csaxs_bec/scans/flomni_fermat_scan_v4.py
@@ -158,7 +158,7 @@ class FlomniFermatScanV4(ScanBase):
 
         self.prepare_setup()
 
-        self.actions.add_scan_report_instruction_device_progress(device="rt_positions")
+        self.actions.add_scan_report_instruction_device_progress(device=self.dev.rt_positions)
         self._baseline_readout_status = self.actions.read_baseline_devices(wait=False)
 
     @scan_hook
@@ -202,10 +202,10 @@ class FlomniFermatScanV4(ScanBase):
         """
 
         # send off the flyer
-        self.dev.rt_positions.kickoff().wait()
+        self.actions.kickoff(device=self.dev.rt_positions)
 
         # start the readout loop of the flyer
-        status = self.actions.complete(device="rt_positions", wait=False)
+        status = self.actions.complete(device=self.dev.rt_positions, wait=False)
         while not status.done:
             self.at_each_point()