diff --git a/DATA/production/workflow-multiplicities.sh b/DATA/production/workflow-multiplicities.sh
index 275200d4f..f98c490b4 100644
--- a/DATA/production/workflow-multiplicities.sh
+++ b/DATA/production/workflow-multiplicities.sh
@@ -30,6 +30,8 @@ if [[ $SYNCMODE == 1 ]]; then NTRDTRKTHREADS=1; else NTRDTRKTHREADS=; fi
 
 : ${NGPURECOTHREADS:=-1} # -1 = auto-detect
 
+: ${RECO_NUM_NODES_WORKFLOW_CMP:=1} # will be set to N Numa domains when running on EPN
+
 # ---------------------------------------------------------------------------------------------------------------------
 # Process multiplicities