diff --git a/src/toolbox_scs/detectors/digitizers.py b/src/toolbox_scs/detectors/digitizers.py
index a679f690fd159d571902937192aede4bed85a380..d3863e7c95639852f290ff36daaa77c59352e577 100644
--- a/src/toolbox_scs/detectors/digitizers.py
+++ b/src/toolbox_scs/detectors/digitizers.py
@@ -636,7 +636,7 @@ def check_peak_params(run, key, raw_trace=None, ntrains=200, params=None,
     if not plot:
         return params
     min_distance = 24 if "FastADC" in key else 440
-    if bunchPattern != 'None':
+    if bunchPattern == 'None':
         bp_params = None
     else:
         if _mnemonics['bunchPatternTable']['source'] in run.all_sources: