diff --git a/eth/catalyst/api.go b/eth/catalyst/api.go
index 44518612e8..5ae580128b 100644
--- a/eth/catalyst/api.go
+++ b/eth/catalyst/api.go
@@ -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)
 }
@@ -517,7 +517,7 @@ 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 {