diff --git a/kv/kv_interface.go b/kv/kv_interface.go
index 9e19d26f3..8b3188b0c 100644
--- a/kv/kv_interface.go
+++ b/kv/kv_interface.go
@@ -81,9 +81,10 @@ type DBVerbosityLvl int8
 type Label uint8
 
 const (
-	ChainDB  Label = 0
-	TxPoolDB Label = 1
-	SentryDB Label = 2
+	ChainDB     Label = 0
+	TxPoolDB    Label = 1
+	SentryDB    Label = 2
+	ConsensusDB Label = 3
 )
 
 func (l Label) String() string {
diff --git a/kv/mdbx/kv_mdbx.go b/kv/mdbx/kv_mdbx.go
index a5f9489d0..13f041569 100644
--- a/kv/mdbx/kv_mdbx.go
+++ b/kv/mdbx/kv_mdbx.go
@@ -169,6 +169,10 @@ func (opts MdbxOpts) Open() (kv.RwDB, error) {
 				return nil, err
 			}
 		} else {
+			if opts.label == kv.ChainDB && opts.pageSize == 4096 {
+				panic(1)
+			}
+			fmt.Printf("al: %s, %d\n", opts.label, opts.pageSize)
 			if err = env.SetGeometry(-1, -1, int(opts.mapSize), int(2*datasize.GB), -1, int(opts.pageSize)); err != nil {
 				return nil, err
 			}