diff --git a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Menu/HLTCFConfig.py b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Menu/HLTCFConfig.py
index e55bbac5b7d857d001e1eab0102ffde913fec4d8..0c12f448a9505b2b5e7382ab8be4f92dfbf8cd03 100644
--- a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Menu/HLTCFConfig.py
+++ b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Menu/HLTCFConfig.py
@@ -70,7 +70,7 @@ def createStepFilterNode(name, seq_list, dump=False):
     for seq in seq_list:
         filterAlg = seq.filter.Alg
         log.info("createStepFilterNode: Add  %s to filter node %s", filterAlg.name(), name)
-        if not filterAlg in filter_list:
+        if filterAlg not in filter_list:
             filter_list.append(filterAlg)