diff --git a/bec_widgets/widgets/plots/waveform/waveform.py b/bec_widgets/widgets/plots/waveform/waveform.py
index 41c6d0ac..2d8e777e 100644
--- a/bec_widgets/widgets/plots/waveform/waveform.py
+++ b/bec_widgets/widgets/plots/waveform/waveform.py
@@ -1217,7 +1217,8 @@ class Waveform(PlotBase):
                 return
             logger.info(f"Async readback for scan ID {scan_id}.")
         else:
-            print()
+            stack_trace = traceback.extract_stack()
+            logger.warning(f"Async readback without scan ID, stack trace: {stack_trace}")
         instruction = metadata.get("async_update", {}).get("type")
         if instruction not in ["add", "add_slice", "replace"]:
             logger.warning(f"Invalid async update instruction: {instruction}")