diff --git a/ouroboros-consensus-cardano/src/byron/Ouroboros/Consensus/Byron/Ledger/Ledger.hs b/ouroboros-consensus-cardano/src/byron/Ouroboros/Consensus/Byron/Ledger/Ledger.hs
index 2afd133316..7fca9a6761 100644
--- a/ouroboros-consensus-cardano/src/byron/Ouroboros/Consensus/Byron/Ledger/Ledger.hs
+++ b/ouroboros-consensus-cardano/src/byron/Ouroboros/Consensus/Byron/Ledger/Ledger.hs
@@ -162,7 +162,8 @@ getByronTip state =
 
 -- | The ticked Byron ledger state
 data instance Ticked (LedgerState ByronBlock) = TickedByronLedgerState {
-      tickedByronLedgerState        :: !CC.ChainValidationState
+      untickedByronLedgerTipBlockNo :: !(WithOrigin BlockNo)
+    , tickedByronLedgerState        :: !CC.ChainValidationState
     , untickedByronLedgerTransition :: !ByronTransition
     }
   deriving (Generic, NoThunks)
@@ -175,7 +176,8 @@ instance IsLedger (LedgerState ByronBlock) where
 
   applyChainTickLedgerResult cfg slotNo ByronLedgerState{..} = pureLedgerResult $
       TickedByronLedgerState {
-          tickedByronLedgerState =
+          untickedByronLedgerTipBlockNo = byronLedgerTipBlockNo
+        , tickedByronLedgerState =
             CC.applyChainTick cfg (toByronSlotNo slotNo) byronLedgerState
         , untickedByronLedgerTransition =
             byronLedgerTransition