diff --git a/DATA/production/configurations/asyncReco/setenv_extra.sh b/DATA/production/configurations/asyncReco/setenv_extra.sh
index 78f6885c1..e3ee7a7d5 100644
--- a/DATA/production/configurations/asyncReco/setenv_extra.sh
+++ b/DATA/production/configurations/asyncReco/setenv_extra.sh
@@ -734,6 +734,10 @@ if [[ $ADD_CALIB == "1" ]]; then
     export CONFIG_EXTRA_PROCESS_o2_tpc_scdcalib_interpolation_workflow+=";scdcalib.maxTracksPerCalibSlot=$ALIEN_JDL_TPCRESIDUALMAXTRACKSPERSLOT;scdcalib.additionalTracksMap=$ALIEN_JDL_TPCRESIDUALADDTRACKSMAP;scdcalib.minPtNoOuterPoint=0.2;scdcalib.maxQ2Pt=5;scdcalib.minITSNClsNoOuterPoint=6;scdcalib.minITSNCls=4;scdcalib.minTPCNClsNoOuterPoint=50;scdcalib.minTOFTRDPVContributors=2;"
     CONFIG_EXTRA_PROCESS_o2_tpc_scdcalib_interpolation_workflow+=$([[ "$ALIEN_JDL_TPCRESIDUAL_WRITEUNFILTERED" == "1" ]] && printf "scdcalib.writeUnfiltered=true;" || printf "scdcalib.writeUnfiltered=false;")
     CONFIG_EXTRA_PROCESS_o2_tpc_scdcalib_interpolation_workflow+=$([[ "$ALIEN_JDL_TPCRESIDUAL_KEEPREJECTEDRES" == "1" ]] && printf "scdcalib.keepRejectedResiduals=true;" || printf "scdcalib.keepRejectedResiduals=false;")
+    # additional scdcalib keys from the JDL, appended last so that they override the defaults above
+    if [[ -n "$ALIEN_JDL_TPCRESIDUAL_EXTRACONFIG" ]]; then
+      CONFIG_EXTRA_PROCESS_o2_tpc_scdcalib_interpolation_workflow+=";$ALIEN_JDL_TPCRESIDUAL_EXTRACONFIG;"
+    fi
 
     export ARGS_EXTRA_PROCESS_o2_tpc_scdcalib_interpolation_workflow+=" --tracking-sources-map-extraction $ALIEN_JDL_TPCRESIDUALTRKSOURCESMAPEXTRACTION"
     if [[ ! $DO_TPC_RESIDUAL_EXTRACTION =~ "NOEXTCLROAD" ]]; then