diff --git a/Simulation/Digitization/python/DigitizationFlags.py b/Simulation/Digitization/python/DigitizationFlags.py
index 40505a7ee7e0d7cc5684c654336a3087cf75902b..14d875b80e3dc47d5482f8ffadd02bb08ea2d413 100755
--- a/Simulation/Digitization/python/DigitizationFlags.py
+++ b/Simulation/Digitization/python/DigitizationFlags.py
@@ -240,32 +240,6 @@ class doHighPtMinBias(JobProperty):
     def _undo_action(self):
         jobproperties.Digitization.HighPtMinBiasInputCols.set_Off()
 
-#
-class doLowPtMinBias(JobProperty):
-    """ Superimpose mixed low pt minimum bias events (pile-up) on signal events?
-         --> will activate the default LowPtMinBiasInputCols as well
-    """
-    statusOn=False
-    allowedTypes=['bool']
-    StoredValue=False
-    def _do_action(self):
-        jobproperties.Digitization.LowPtMinBiasInputCols.set_On()
-    def _undo_action(self):
-        jobproperties.Digitization.LowPtMinBiasInputCols.set_Off()
-
-#
-class doHighPtMinBias(JobProperty):
-    """ Superimpose mixed high pt minimum bias events (pile-up) on signal events?
-         --> will activate the default HighPtMinBiasInputCols as well
-    """
-    statusOn=False
-    allowedTypes=['bool']
-    StoredValue=False
-    def _do_action(self):
-        jobproperties.Digitization.HighPtMinBiasInputCols.set_On()
-    def _undo_action(self):
-        jobproperties.Digitization.HighPtMinBiasInputCols.set_Off()
-
 #
 class doCavern(JobProperty):
     """ Superimpose cavern events on signal events?