diff --git a/cardano-api/internal/Cardano/Api/ProtocolParameters.hs b/cardano-api/internal/Cardano/Api/ProtocolParameters.hs
index e2df32dc92..66cca504eb 100644
--- a/cardano-api/internal/Cardano/Api/ProtocolParameters.hs
+++ b/cardano-api/internal/Cardano/Api/ProtocolParameters.hs
@@ -1744,8 +1744,7 @@ fromExactlyAlonzoPParams :: (AlonzoEraPParams ledgerera, Ledger.ExactEra Ledger.
                         -> ProtocolParameters
 fromExactlyAlonzoPParams pp =
   (fromAlonzoPParams pp) {
-      protocolParamUTxOCostPerByte = Just . fromShelleyLovelace . unCoinPerWord $
-                                       pp ^. ppCoinsPerUTxOWordL
+      protocolParamUTxOCostPerByte = Just . unCoinPerWord $ pp ^. ppCoinsPerUTxOWordL
   }
 
 fromBabbagePParams :: BabbageEraPParams ledgerera
diff --git a/cardano-api/test/cardano-api-golden/Test/Golden/Cardano/Api/ProtocolParameters.hs b/cardano-api/test/cardano-api-golden/Test/Golden/Cardano/Api/ProtocolParameters.hs
index 02f162137e..c65331076b 100644
--- a/cardano-api/test/cardano-api-golden/Test/Golden/Cardano/Api/ProtocolParameters.hs
+++ b/cardano-api/test/cardano-api-golden/Test/Golden/Cardano/Api/ProtocolParameters.hs
@@ -9,8 +9,8 @@ module Test.Golden.Cardano.Api.ProtocolParameters
   ) where
 
 import           Cardano.Api (AnyPlutusScriptVersion (AnyPlutusScriptVersion), CostModel (..),
-                   ExecutionUnits (..), Lovelace (..), PlutusScriptVersion (..), makePraosNonce)
-import           Cardano.Api.Ledger (EpochInterval (EpochInterval), StandardCrypto)
+                   ExecutionUnits (..), PlutusScriptVersion (..), makePraosNonce)
+import           Cardano.Api.Ledger (Coin (..), EpochInterval (EpochInterval), StandardCrypto)
 import           Cardano.Api.ProtocolParameters (ExecutionUnitPrices (..), ProtocolParameters (..))
 
 import           Cardano.Ledger.Alonzo (AlonzoEra)
@@ -60,20 +60,20 @@ goldenProtocolParametersToPParams _ =
     decodedLegacyCardanoApiProtocolParameters = eitherDecode bytestringLegacyCardanoApiProtocolParameters
 
 legacyCardanoApiProtocolParameters :: ProtocolParameters
-legacyCardanoApiProtocolParameters = ProtocolParameters { protocolParamUTxOCostPerByte = Just $ Lovelace 1_000_000
-                                                        , protocolParamTxFeePerByte = Lovelace 2_000_000
-                                                        , protocolParamTxFeeFixed = Lovelace 1_500_000
+legacyCardanoApiProtocolParameters = ProtocolParameters { protocolParamUTxOCostPerByte = Just $ Coin 1_000_000
+                                                        , protocolParamTxFeePerByte = Coin 2_000_000
+                                                        , protocolParamTxFeeFixed = Coin 1_500_000
                                                         , protocolParamTreasuryCut = 0.1
                                                         , protocolParamStakePoolTargetNum = 100
-                                                        , protocolParamStakePoolDeposit = Lovelace 1_000_000_000
-                                                        , protocolParamStakeAddressDeposit = Lovelace 10_000_000
+                                                        , protocolParamStakePoolDeposit = Coin 1_000_000_000
+                                                        , protocolParamStakeAddressDeposit = Coin 10_000_000
                                                         , protocolParamProtocolVersion = (2, 3)
                                                         , protocolParamPrices = Just executionUnitPrices
                                                         , protocolParamPoolRetireMaxEpoch = Cardano.Api.Ledger.EpochInterval 4
                                                         , protocolParamPoolPledgeInfluence = 0.54
                                                         , protocolParamMonetaryExpansion = 0.23
-                                                        , protocolParamMinUTxOValue = Just $ Lovelace 3_000_000
-                                                        , protocolParamMinPoolCost = Lovelace 3_500_000
+                                                        , protocolParamMinUTxOValue = Just $ Coin 3_000_000
+                                                        , protocolParamMinPoolCost = Coin 3_500_000
                                                         , protocolParamMaxValueSize = Just 10
                                                         , protocolParamMaxTxSize = 3000
                                                         , protocolParamMaxTxExUnits = Just executionUnits
diff --git a/cardano-api/test/cardano-api-test/Test/Cardano/Api/ProtocolParameters.hs b/cardano-api/test/cardano-api-test/Test/Cardano/Api/ProtocolParameters.hs
index 191029f3bc..cc17f5b389 100644
--- a/cardano-api/test/cardano-api-test/Test/Cardano/Api/ProtocolParameters.hs
+++ b/cardano-api/test/cardano-api-test/Test/Cardano/Api/ProtocolParameters.hs
@@ -46,7 +46,7 @@ tests =
                           ]
               ]
 
--- | Compares the JSON serialization of cardano-ledger's PParams and cardano-api's ProtocolParameters and 
+-- | Compares the JSON serialization of cardano-ledger's PParams and cardano-api's ProtocolParameters and
 -- | ensures that they are the same (except for the agreed changes specified in `patchProtocolParamsJSONOrFail`)
 protocolParametersSerializeTheSame :: forall era. ToJSON (PParams (ShelleyLedgerEra era)) => CardanoEra era -> Property
 protocolParametersSerializeTheSame era =