diff --git a/bec_widgets/widgets/plots/waveform/waveform.py b/bec_widgets/widgets/plots/waveform/waveform.py
index 0d9a455b..31e7e9b7 100644
--- a/bec_widgets/widgets/plots/waveform/waveform.py
+++ b/bec_widgets/widgets/plots/waveform/waveform.py
@@ -1548,6 +1548,7 @@ class Waveform(PlotBase):
         """
         Categorise the device curves into sync and async based on the readout priority.
         """
+        logger.info(f"Called categorise_device_curves from {traceback.extract_stack()}")
         if self.scan_item is None:
             self.update_with_scan_history(-1)
             if self.scan_item is None: