diff --git a/DDG4/python/DDSim/Helper/Action.py b/DDG4/python/DDSim/Helper/Action.py
index 94bd505aa..f33e550fe 100644
--- a/DDG4/python/DDSim/Helper/Action.py
+++ b/DDG4/python/DDSim/Helper/Action.py
@@ -18,7 +18,7 @@ class Action(ConfigHelper):
 
   >>> SIM = DD4hepSimulation()
   >>> SIM.action.trackerSDTypes = ['tracker', 'myTrackerSensType']
-  >>> SIM.calor.calorimeterSDTypes = ['calorimeter', 'myCaloSensType']
+  >>> SIM.action.calorimeterSDTypes = ['calorimeter', 'myCaloSensType']
 
   For specific subdetectors specific sensitive detectors can be set based on patterns in the name of the subdetector.