diff --git a/builder/builder.go b/builder/builder.go
index 91732d75f..f06c9aa81 100644
--- a/builder/builder.go
+++ b/builder/builder.go
@@ -287,7 +287,7 @@ func (b *Builder) onSealedBlock(opts SubmitBlockOpts) error {
 		}
 	}
 
-	log.Info("submitted block", "version", dataVersion.String(), "slot", opts.PayloadAttributes.Slot, "value", opts.BlockValue.String(), "parent", opts.Block.ParentHash,
+	log.Info("submitted block", "version", dataVersion.String(), "slot", opts.PayloadAttributes.Slot, "value", opts.BlockValue.String(), "parent", opts.Block.ParentHash().String(),
 		"hash", opts.Block.Hash(), "#commitedBundles", len(opts.CommitedBundles))
 
 	return nil
diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
index 487ec80b1..116557f6e 100644
--- a/internal/ethapi/api.go
+++ b/internal/ethapi/api.go
@@ -2337,13 +2337,13 @@ func (s *BundleAPI) CallBundle(ctx context.Context, args CallBundleArgs) (map[st
 	}
 
 	header := &types.Header{
-		ParentHash: parent.Hash(),
-		Number:     blockNumber,
-		GasLimit:   gasLimit,
-		Time:       timestamp,
-		Difficulty: difficulty,
-		Coinbase:   coinbase,
-		BaseFee:    baseFee,
+		ParentHash:    parent.Hash(),
+		Number:        blockNumber,
+		GasLimit:      gasLimit,
+		Time:          timestamp,
+		Difficulty:    difficulty,
+		Coinbase:      coinbase,
+		BaseFee:       baseFee,
 		ExcessBlobGas: &excessBlobGas,
 	}