diff --git a/core/types/bal/bal_encoding.go b/core/types/bal/bal_encoding.go
index 25d8bedc01..e18be842b0 100644
--- a/core/types/bal/bal_encoding.go
+++ b/core/types/bal/bal_encoding.go
@@ -23,12 +23,13 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"github.com/ethereum/go-ethereum/log"
 	"io"
 	"maps"
 	"slices"
 	"strings"
 
+	"github.com/ethereum/go-ethereum/log"
+
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/params"
@@ -413,10 +414,10 @@ func (e *AccountAccess) validate(blockTxCount int) error {
 		}
 	}
 
-	// validate that code changes could plausibly be correct (none exceed
-	// max code size of a contract)
+	// validate that code changes could plausibly be correct
+	// (none exceed max code size of a contract)
 	for _, codeChange := range e.CodeChanges {
-		if len(codeChange.Code) > params.MaxCodeSize {
+		if len(codeChange.Code) > params.MaxCodeSizeAmsterdam {
 			return fmt.Errorf("code change contained oversized code")
 		}
 	}