diff --git a/Trigger/TriggerCommon/TriggerMenuMT/python/HLT/Electron/TrigElectronFactoriesCfg.py b/Trigger/TriggerCommon/TriggerMenuMT/python/HLT/Electron/TrigElectronFactoriesCfg.py
index b748dc9cf849dfb36f290387cb590064b06b749a..b034126cc5774b0e470eb521726e85178f397774 100644
--- a/Trigger/TriggerCommon/TriggerMenuMT/python/HLT/Electron/TrigElectronFactoriesCfg.py
+++ b/Trigger/TriggerCommon/TriggerMenuMT/python/HLT/Electron/TrigElectronFactoriesCfg.py
@@ -126,7 +126,8 @@ def TrigElectronIsoBuilderCfg(flags, tag, TrackParticleLocation, electronCollect
                                         TrackIsolationTool    = acc.popToolsAndMerge(TrigTrackIsolationToolCfg(flags,tag,TrackParticleLocation)),
                                         ElIsoTypes            = [[isoPar.ptcone30,isoPar.ptcone20]],
                                         ElCorTypes            = [[isoPar.coreTrackPtr]],
-                                        ElCorTypesExtra       = [[]])
+                                        ElCorTypesExtra       = [[]],
+                                        IsTrigger = True)
         acc.addEventAlgo(builder)
         return acc