diff --git a/tlb/transaction.go b/tlb/transaction.go
index 76b9da4..72c53c7 100644
--- a/tlb/transaction.go
+++ b/tlb/transaction.go
@@ -348,7 +348,7 @@ func (a AccStatusChange) ToCell() (*cell.Cell, error) {
 	case AccStatusChangeUnchanged:
 		return cell.BeginCell().MustStoreUInt(0b0, 1).EndCell(), nil
 	case AccStatusChangeFrozen:
-		return cell.BeginCell().MustStoreUInt(0b01, 2).EndCell(), nil
+		return cell.BeginCell().MustStoreUInt(0b10, 2).EndCell(), nil
 	case AccStatusChangeDeleted:
 		return cell.BeginCell().MustStoreUInt(0b11, 2).EndCell(), nil
 	}
diff --git a/tvm/cell/cell_test.go b/tvm/cell/cell_test.go
index 37110c2..03d714b 100644
--- a/tvm/cell/cell_test.go
+++ b/tvm/cell/cell_test.go
@@ -167,15 +167,14 @@ func TestVarAddr(t *testing.T) {
 
 func BenchmarkHash(b *testing.B) {
 	boc, _ := hex.DecodeString("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-	c, err := FromBOC(boc)
-	if err != nil {
-		b.Fatal(err)
-	}
 
 	b.StartTimer()
 	for i := 0; i < b.N; i++ {
-		c.hashes = nil
-		_ = c.Hash()
+		c, err := FromBOC(boc)
+		if err != nil {
+			b.Fatal(err)
+		}
+		c.calculateHashes()
 	}
 	b.StopTimer()
 }
@@ -233,6 +232,19 @@ func TestCell_TxWithMerkleBody(t *testing.T) {
 	}
 }
 
+func TestCell_BlockHashUniTest(t *testing.T) {
+	boc, _ := base64.StdEncoding.DecodeString("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+	c, err := FromBOC(boc)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	hash, _ := hex.DecodeString("AF5D3E57D0488A95DE590D84C309C16B33E53961A35E24583072C39CBDBBDBCC")
+	if !bytes.Equal(c.Hash(), hash) {
+		t.Fatal("incorrect hash", hex.EncodeToString(c.Hash()), hex.EncodeToString(hash))
+	}
+}
+
 func TestCell_ShardStateProof(t *testing.T) {
 	boc, _ := hex.DecodeString("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")
 	c, err := FromBOC(boc)