diff --git a/eth/catalyst/api.go b/eth/catalyst/api.go
index 44518612e8..d16d37d328 100644
--- a/eth/catalyst/api.go
+++ b/eth/catalyst/api.go
@@ -488,7 +488,7 @@ func (api *ConsensusAPI) NewPayloadV1(params engine.ExecutableData) (engine.Payl
 // NewPayloadV2 creates an Eth1 block, inserts it in the chain, and returns the status of the chain.
 func (api *ConsensusAPI) NewPayloadV2(params engine.ExecutableData) (engine.PayloadStatusV1, error) {
 	if api.eth.BlockChain().Config().IsCancun(api.eth.BlockChain().Config().LondonBlock, params.Timestamp) {
-		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("can't use new payload v2 post-shanghai"))
+		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("can't use newPayloadV2 post-cancun"))
 	}
 	if api.eth.BlockChain().Config().LatestFork(params.Timestamp) == forks.Shanghai {
 		if params.Withdrawals == nil {
@@ -503,7 +503,7 @@ func (api *ConsensusAPI) NewPayloadV2(params engine.ExecutableData) (engine.Payl
 		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("non-nil excessBlobGas pre-cancun"))
 	}
 	if params.BlobGasUsed != nil {
-		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("non-nil params.BlobGasUsed pre-cancun"))
+		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("non-nil blobGasUsed pre-cancun"))
 	}
 	return api.newPayload(params, nil, nil)
 }
@@ -517,14 +517,14 @@ func (api *ConsensusAPI) NewPayloadV3(params engine.ExecutableData, versionedHas
 		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil excessBlobGas post-cancun"))
 	}
 	if params.BlobGasUsed == nil {
-		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil params.BlobGasUsed post-cancun"))
+		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil blobGasUsed post-cancun"))
 	}
 
 	if versionedHashes == nil {
 		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil versionedHashes post-cancun"))
 	}
 	if beaconRoot == nil {
-		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil parentBeaconBlockRoot post-cancun"))
+		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil beaconRoot post-cancun"))
 	}
 
 	if api.eth.BlockChain().Config().LatestFork(params.Timestamp) != forks.Cancun {