diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index 41179cf43..72039a61c 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -12,6 +12,7 @@ import (
 	"sync/atomic"
 	"time"
 
+	json "github.com/nspcc-dev/go-ordered-json"
 	"github.com/nspcc-dev/neo-go/pkg/config"
 	"github.com/nspcc-dev/neo-go/pkg/config/limits"
 	"github.com/nspcc-dev/neo-go/pkg/core/block"
@@ -535,8 +536,10 @@ func (bc *Blockchain) init() error {
 			return fmt.Errorf("failed to check native %s state against autogenerated one: %w", md.Name, err)
 		}
 		if !bytes.Equal(storedCSBytes, autogenCSBytes) {
-			return fmt.Errorf("native %s: version mismatch (stored contract state differs from autogenerated one), "+
-				"try to resynchronize the node from the genesis", md.Name)
+			storedJ, _ := json.Marshal(storedCS)
+			autogenJ, _ := json.Marshal(autogenCS)
+			return fmt.Errorf("native %s: version mismatch for the latest hardfork %s (stored contract state differs from autogenerated one), "+
+				"try to resynchronize the node from the genesis: %s vs %s", md.Name, current, string(storedJ), string(autogenJ))
 		}
 	}
 
diff --git a/pkg/core/blockchain_neotest_test.go b/pkg/core/blockchain_neotest_test.go
index 32d5ec93f..de7f157f8 100644
--- a/pkg/core/blockchain_neotest_test.go
+++ b/pkg/core/blockchain_neotest_test.go
@@ -269,7 +269,7 @@ func TestBlockchain_StartFromExistingDB(t *testing.T) {
 
 		_, _, _, err = chain.NewMultiWithCustomConfigAndStoreNoCheck(t, customConfig, cache)
 		require.Error(t, err)
-		require.True(t, strings.Contains(err.Error(), fmt.Sprintf("native %s: version mismatch (stored contract state differs from autogenerated one)", nativenames.CryptoLib)), err)
+		require.True(t, strings.Contains(err.Error(), fmt.Sprintf("native %s: version mismatch for the latest hardfork Cockatrice (stored contract state differs from autogenerated one)", nativenames.CryptoLib)), err)
 	})
 
 	t.Run("good", func(t *testing.T) {