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diff --git a/src/defaults/UnderlyingEvent.in b/src/defaults/UnderlyingEvent.in
--- a/src/defaults/UnderlyingEvent.in
+++ b/src/defaults/UnderlyingEvent.in
@@ -1,58 +1,59 @@
################################################
# Set up the handler for the underlying event.
################################################
mkdir /Herwig/UnderlyingEvent
cd /Herwig/UnderlyingEvent
######## cuts #################################################
library SimpleKTCut.so
# cut on pt. Without a specific matcher object, it works on all
# particles
create ThePEG::SimpleKTCut KtCut
newdef KtCut:MinKT 4.02
# create the cuts object for the Underlying Event
create ThePEG::Cuts UECuts
# This should always be 2*MinKT!!
newdef UECuts:MHatMin 8.04
insert UECuts:OneCuts 0 KtCut
######## subprocess ###########################################
create ThePEG::SubProcessHandler FastQCD
create Herwig::MEQCD2to2Fast MEQCD2to2Fast HwMEHadronFast.so
insert FastQCD:MatrixElements 0 MEQCD2to2Fast
-newdef FastQCD:PartonExtractor /Herwig/Partons/QCDExtractor
+cp /Herwig/Partons/QCDExtractor /Herwig/Partons/MPIExtractor
+newdef FastQCD:PartonExtractor /Herwig/Partons/MPIExtractor
######## MPI Handler ##########################################
library HwMPI.so
create Herwig::MPIHandler MPIHandler
# set the subprocesses and corresponding cuts
insert MPIHandler:SubProcessHandlers 0 FastQCD
insert MPIHandler:Cuts 0 UECuts
# The inverse hadron radius
newdef MPIHandler:InvRadius 1.1
# Set the details of the soft model
# Flag to decide whether additional soft interactions (i.e. pt < ptmin)
# should be simulated at all
newdef MPIHandler:softInt Yes
# Flag to decide whether to use the 2 component model. In this model,
# the hadron radius (or better: mean parton-parton separation) can be
# different for hard and soft scatters. The radius for the soft scatters
# is computed during the run startup so that the elastic t-slope, B_el,
# coincides with current measurements (for CMenergy < 1.8 TeV) or
# Donnachie-Landshoff pomeron fit (CMenergy > 1.8 TeV). If this model is
# disabled one has to take care that this observable is correctly
# described by adjusting InvRadius properly.
newdef MPIHandler:twoComp Yes
newdef MPIHandler:DLmode 3

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