diff --git a/CaloFuture/CaloFutureUtils/include/CaloFutureUtils/CaloFuture2MC.h b/CaloFuture/CaloFutureUtils/include/CaloFutureUtils/CaloFuture2MC.h
index de7d17dab3a22bbca84fb6079818c2e9bb441b30..b5ba59c120e275997493ac442ea3fc05981ace36 100644
--- a/CaloFuture/CaloFutureUtils/include/CaloFutureUtils/CaloFuture2MC.h
+++ b/CaloFuture/CaloFutureUtils/include/CaloFutureUtils/CaloFuture2MC.h
@@ -47,6 +47,9 @@ namespace LHCb::CaloFuture2MC {
   using IDigitTable = IRelationWeighted<LHCb::CaloCellID, LHCb::MCParticle, float>;
   using DigitTable  = RelationWeighted1D<LHCb::CaloCellID, LHCb::MCParticle, float>;
 
+  using IMC2DigitTable = IRelationWeighted<LHCb::MCParticle, LHCb::CaloCellID, float>;
+  using MC2DigitTable  = RelationWeighted1D<LHCb::MCParticle, LHCb::CaloCellID, float>;
+
   using IHypoTable = IRelationWeighted<LHCb::CaloCellID, LHCb::MCParticle, float>;
   using HypoTable  = RelationWeighted1D<LHCb::CaloCellID, LHCb::MCParticle, float>;