diff --git a/concordium-consensus/src/Concordium/GlobalState/BlockState.hs b/concordium-consensus/src/Concordium/GlobalState/BlockState.hs
index d00beac7b1..2408a96eae 100644
--- a/concordium-consensus/src/Concordium/GlobalState/BlockState.hs
+++ b/concordium-consensus/src/Concordium/GlobalState/BlockState.hs
@@ -1511,7 +1511,7 @@ class (BlockStateQuery m) => BlockStateOperations m where
     bsoIsProtocolUpdateEffective :: UpdatableBlockState m -> m Bool
 
     -- | Update the count of missed rounds for a given validator
-    bsoUpdateMissedBlocks :: (PVSupportsDelegation (MPV m)) => UpdatableBlockState m -> (BakerId, Int8) -> m (UpdatableBlockState m)
+    bsoUpdateMissedBlocks :: (PVSupportsDelegation (MPV m)) => UpdatableBlockState m -> (BakerId, Int16) -> m (UpdatableBlockState m)
 
     -- | Clear the missed round count for a given validator
     bsoClearMissedBlocks :: (PVSupportsDelegation (MPV m)) => UpdatableBlockState m -> BakerId -> m (UpdatableBlockState m)
diff --git a/concordium-consensus/src/Concordium/GlobalState/Persistent/BlockState.hs b/concordium-consensus/src/Concordium/GlobalState/Persistent/BlockState.hs
index 28928047f7..ffce2e1af0 100644
--- a/concordium-consensus/src/Concordium/GlobalState/Persistent/BlockState.hs
+++ b/concordium-consensus/src/Concordium/GlobalState/Persistent/BlockState.hs
@@ -3465,7 +3465,7 @@ doGetProtocolUpdateStatus = protocolUpdateStatus . bspUpdates <=< loadPBS
 doIsProtocolUpdateEffective :: (SupportsPersistentState pv m) => PersistentBlockState pv -> m Bool
 doIsProtocolUpdateEffective = isProtocolUpdateEffective . bspUpdates <=< loadPBS
 
-doUpdateMissedBlocks :: (PVSupportsDelegation pv, SupportsPersistentState pv m) => PersistentBlockState pv -> (BakerId, Int8) -> m (PersistentBlockState pv)
+doUpdateMissedBlocks :: (PVSupportsDelegation pv, SupportsPersistentState pv m) => PersistentBlockState pv -> (BakerId, Int16) -> m (PersistentBlockState pv)
 doUpdateMissedBlocks pbs (bId, newMissedRounds) = do
     bsp <- loadPBS pbs
     bsp' <-
diff --git a/concordium-consensus/src/Concordium/GlobalState/PoolRewards.hs b/concordium-consensus/src/Concordium/GlobalState/PoolRewards.hs
index 85a59f3c1e..e3d577c47d 100644
--- a/concordium-consensus/src/Concordium/GlobalState/PoolRewards.hs
+++ b/concordium-consensus/src/Concordium/GlobalState/PoolRewards.hs
@@ -24,7 +24,7 @@ data BakerPoolRewardDetails = BakerPoolRewardDetails
       -- | Whether the pool contributed to a finalization proof in the reward period
       finalizationAwake :: !Bool,
       -- | The number of missed rounds in the reward period
-      missedRounds :: !Int8
+      missedRounds :: !Int16
     }
     deriving (Eq, Show)
 
@@ -34,7 +34,7 @@ instance Serialize BakerPoolRewardDetails where
         put transactionFeesAccrued
         putBool finalizationAwake
 
-    get = BakerPoolRewardDetails <$> getWord64be <*> get <*> getBool <*> getInt8
+    get = BakerPoolRewardDetails <$> getWord64be <*> get <*> getBool <*> getInt16be
 
 instance HashableTo Hash.Hash BakerPoolRewardDetails where
     getHash = Hash.hash . encode
diff --git a/concordium-consensus/src/Concordium/KonsensusV1/Consensus/Blocks.hs b/concordium-consensus/src/Concordium/KonsensusV1/Consensus/Blocks.hs
index 6880b4479f..c97fda77a5 100644
--- a/concordium-consensus/src/Concordium/KonsensusV1/Consensus/Blocks.hs
+++ b/concordium-consensus/src/Concordium/KonsensusV1/Consensus/Blocks.hs
@@ -19,6 +19,7 @@ import Data.Function
 import Data.Int
 import Data.Ord
 import Data.Time
+import Data.List (group)
 import qualified Data.Vector as Vector
 import Lens.Micro.Platform
 
@@ -1385,19 +1386,19 @@ computeMissedRounds ::
     Option TimeoutCertificate ->
     BlockPointer (MPV m) ->
     Round ->
-    m [(BakerId, Int8)]
-computeMissedRounds tc parent rnd = do
+    m [(BakerId, Int16)]
+computeMissedRounds tc _parent _rnd | isAbsent tc = return []
+computeMissedRounds _tc parent rnd = do
     let parentBlockState = bpState parent
     validators <- getCurrentEpochBakers parentBlockState
     seedState <- getSeedState parentBlockState
-    let missedRounds
-            | isPresent tc =
-                let beginRound = blockRound parent
-                    endRound = rnd - 1
-                    leNonce = seedState ^. currentLeadershipElectionNonce
-                in  [ (winner ^. bakerIdentity, fromIntegral r)
-                      | r <- [beginRound .. endRound],
-                        let winner = getLeaderFullBakers validators leNonce r
-                    ]
-            | otherwise = []
+    let missedRoundsValidators =
+            let beginRound = blockRound parent
+                endRound = rnd - 1
+                leNonce = seedState ^. currentLeadershipElectionNonce
+            in  [ winner ^. bakerIdentity
+                  | r <- [beginRound .. endRound],
+                    let winner = getLeaderFullBakers validators leNonce r
+                ]
+    let missedRounds = [(head g, fromIntegral $ length g) | g <- group missedRoundsValidators]
     return missedRounds
diff --git a/concordium-consensus/src/Concordium/KonsensusV1/Scheduler.hs b/concordium-consensus/src/Concordium/KonsensusV1/Scheduler.hs
index 72359e67e7..9b088a31dd 100644
--- a/concordium-consensus/src/Concordium/KonsensusV1/Scheduler.hs
+++ b/concordium-consensus/src/Concordium/KonsensusV1/Scheduler.hs
@@ -60,6 +60,8 @@ data PaydayParameters = PaydayParameters
 data ParticipatingBakers = ParticipatingBakers
     { -- | The 'BakerId' of the block baker.
       pbBlockBaker :: BakerId,
+      -- | The 'BakerId's of the signatories to the block QC.
+      --  No particular ordering is assumed.
       pbQCSignatories :: [BakerId]
     }
 
@@ -82,7 +84,7 @@ data BlockExecutionData (pv :: ProtocolVersion) = BlockExecutionData
       -- | Number of rounds a validator has missed (e.g. the validator was
       --   elected leader but a timeout certificate exist for the round) since the parent
       --   block.
-      bedMissedRounds :: [(BakerId, Int8)]
+      bedMissedRounds :: [(BakerId, Int16)]
     }
 
 -- | Details of the transactions in a block that are used for computing rewards that accrue to the
@@ -308,8 +310,6 @@ executeBlockPrologue BlockExecutionData{..} = do
     theState5 <- doUpdateSeedStateForBlock bedTimestamp bedBlockNonce theState4
     -- update the missed rounds count for each active baker
     theState6 <- if isJust mPaydayParms
-                    -- TODO (drsk) For now, we just clear the missed rounds on each new payday. 
-                    -- on each new payday: update score, clear score if validator was active
                     then foldM bsoClearMissedBlocks theState5 activeBakers
                     else foldM bsoUpdateMissedBlocks theState5 bedMissedRounds
     return