diff --git a/scripts/CMSSW_12_4_0.sh b/scripts/CMSSW_12_4_0.sh
index 9150781cc3681ee96fefc65c8d8533f0425f8033..d0da8eee3814027b20ac24b510b329a4286ce845 100755
--- a/scripts/CMSSW_12_4_0.sh
+++ b/scripts/CMSSW_12_4_0.sh
@@ -30,9 +30,11 @@ eval $(scram runtime -sh) # cmsenv
 
 # Set up symlinks to the relevant parts of Core
 mkdir -p $CMSSW_BASE/src/Core
-#[ ! -d $CMSSW_VERSION/src/Core/Objects   ] && ln -s $DAS_BASE/Core/Objects   $CMSSW_BASE/src/Core
-#[ ! -d $CMSSW_VERSION/src/Core/Ntupliser ] && ln -s $DAS_BASE/Core/Ntupliser $CMSSW_BASE/src/Core
-# TODO: uncomment once Core is fixed
+[ ! -d $CMSSW_VERSION/src/Core/Objects   ] && ln -s $DAS_BASE/Core/Objects   $CMSSW_BASE/src/Core
+[ ! -d $CMSSW_VERSION/src/Core/Ntupliser ] && ln -s $DAS_BASE/Core/Ntupliser $CMSSW_BASE/src/Core
+[ ! -f $CMSSW_VERSION/src/Core/Ntupliser/plugins/UserInfo.h  ] && ln -s $DAS_BASE/Darwin/interface/UserInfo.h $CMSSW_BASE/src/Core/Ntupliser/plugins/
+[ ! -f $CMSSW_VERSION/src/Core/Ntupliser/plugins/UserInfo.cc ] && ln -s $DAS_BASE/Darwin/src/UserInfo.cc      $CMSSW_BASE/src/Core/Ntupliser/plugins/
+[ ! -f $CMSSW_VERSION/src/Core/Ntupliser/plugins/colours.h   ] && ln -s $DAS_BASE/Darwin/interface/colours.h  $CMSSW_BASE/src/Core/Ntupliser/plugins/
 
 cd $CMSSW_BASE
 scram b -j$(nproc)