diff --git a/erigon-lib/kv/kv_interface.go b/erigon-lib/kv/kv_interface.go
index c7a26f59aa5..7e414eb9281 100644
--- a/erigon-lib/kv/kv_interface.go
+++ b/erigon-lib/kv/kv_interface.go
@@ -146,15 +146,15 @@ type DBVerbosityLvl int8
 type Label uint8
 
 const (
-	ChainDB         Label = 0
-	TxPoolDB        Label = 1
-	SentryDB        Label = 2
-	ConsensusDB     Label = 3
-	DownloaderDB    Label = 4
-	InMem           Label = 5
-	HeimdallDB      Label = 6
-	DiagnosticsDB   Label = 7
-	PolygonBridgeDB Label = 8
+	Unknown Label = iota
+	ChainDB
+	TxPoolDB
+	SentryDB
+	ConsensusDB
+	DownloaderDB
+	HeimdallDB
+	DiagnosticsDB
+	PolygonBridgeDB
 )
 
 func (l Label) String() string {
@@ -169,8 +169,6 @@ func (l Label) String() string {
 		return "consensus"
 	case DownloaderDB:
 		return "downloader"
-	case InMem:
-		return "inMem"
 	case HeimdallDB:
 		return "heimdall"
 	case DiagnosticsDB:
@@ -193,14 +191,14 @@ func UnmarshalLabel(s string) Label {
 		return ConsensusDB
 	case "downloader":
 		return DownloaderDB
-	case "inMem":
-		return InMem
 	case "heimdall":
 		return HeimdallDB
 	case "diagnostics":
 		return DiagnosticsDB
 	case "polygon-bridge":
 		return PolygonBridgeDB
+	case "unknown":
+		return Unknown
 	default:
 		panic(fmt.Sprintf("unexpected label: %s", s))
 	}
diff --git a/erigon-lib/kv/mdbx/kv_mdbx.go b/erigon-lib/kv/mdbx/kv_mdbx.go
index 2f309cce8ad..0d1a1663cdd 100644
--- a/erigon-lib/kv/mdbx/kv_mdbx.go
+++ b/erigon-lib/kv/mdbx/kv_mdbx.go
@@ -89,7 +89,7 @@ func NewMDBX(log log.Logger) MdbxOpts {
 		growthStep:      DefaultGrowthStep,
 		mergeThreshold:  2 * 8192,
 		shrinkThreshold: -1, // default
-		label:           kv.InMem,
+		label:           kv.Unknown,
 	}
 	return opts
 }
@@ -142,7 +142,6 @@ func (opts MdbxOpts) InMem(tmpDir string) MdbxOpts {
 	opts.mapSize = 512 * datasize.MB
 	opts.dirtySpace = uint64(64 * datasize.MB)
 	opts.shrinkThreshold = 0 // disable
-	opts.label = kv.InMem
 	opts.pageSize = 4096
 	return opts
 }
diff --git a/erigon-lib/kv/mdbx/kv_mdbx_temporary.go b/erigon-lib/kv/mdbx/kv_mdbx_temporary.go
index df8e7082bd8..ef9e79c172e 100644
--- a/erigon-lib/kv/mdbx/kv_mdbx_temporary.go
+++ b/erigon-lib/kv/mdbx/kv_mdbx_temporary.go
@@ -36,7 +36,7 @@ func NewTemporaryMdbx(ctx context.Context, tempdir string) (kv.RwDB, error) {
 		return &TemporaryMdbx{}, err
 	}
 
-	db, err := NewMDBX(log.Root()).Label(kv.InMem).Label(kv.InMem).Path(path).Open(ctx)
+	db, err := NewMDBX(log.Root()).Label(kv.Unknown).InMem(path).Open(ctx)
 	if err != nil {
 		return &TemporaryMdbx{}, err
 	}
diff --git a/erigon-lib/kv/membatchwithdb/memory_mutation.go b/erigon-lib/kv/membatchwithdb/memory_mutation.go
index 5192ebc9abe..3bce9c02321 100644
--- a/erigon-lib/kv/membatchwithdb/memory_mutation.go
+++ b/erigon-lib/kv/membatchwithdb/memory_mutation.go
@@ -69,7 +69,7 @@ func NewMemoryBatch(tx kv.Tx, tmpDir string, logger log.Logger) *MemoryMutation
 	}
 }
 
-func NewMemoryBatchWithCustomDB(tx kv.Tx, db kv.RwDB, uTx kv.RwTx, tmpDir string) *MemoryMutation {
+func NewMemoryBatchWithCustomDB(tx kv.Tx, db kv.RwDB, uTx kv.RwTx) *MemoryMutation {
 	return &MemoryMutation{
 		db:             tx,
 		memDb:          db,
diff --git a/turbo/engineapi/engine_block_downloader/core.go b/turbo/engineapi/engine_block_downloader/core.go
index f609cfee046..1e9352f4388 100644
--- a/turbo/engineapi/engine_block_downloader/core.go
+++ b/turbo/engineapi/engine_block_downloader/core.go
@@ -76,7 +76,7 @@ func (e *EngineBlockDownloader) download(ctx context.Context, hashToDownload lib
 	}
 	defer tmpTx.Rollback()
 
-	memoryMutation := membatchwithdb.NewMemoryBatchWithCustomDB(tx, tmpDb, tmpTx, e.tmpdir)
+	memoryMutation := membatchwithdb.NewMemoryBatchWithCustomDB(tx, tmpDb, tmpTx)
 	defer memoryMutation.Rollback()
 
 	startBlock, endBlock, startHash, err := e.loadDownloadedHeaders(memoryMutation)