diff --git a/config/datastore.go b/config/datastore.go
index 2b9bf600df24..2b861a113cf9 100644
--- a/config/datastore.go
+++ b/config/datastore.go
@@ -15,9 +15,10 @@ type Datastore struct {
 	StorageGCWatermark int64  // in percentage to multiply on StorageMax
 	GCPeriod           string // in ns, us, ms, s, m, h
 
-	Params     *json.RawMessage
-	NoSync     bool
-	HashOnRead bool
+	Params          *json.RawMessage
+	NoSync          bool
+	HashOnRead      bool
+	BloomFilterSize int
 }
 
 func (d *Datastore) ParamData() []byte {
diff --git a/config/init.go b/config/init.go
index 8a6c72222ce5..5123e39e9e4c 100644
--- a/config/init.go
+++ b/config/init.go
@@ -85,6 +85,7 @@ func datastoreConfig() (Datastore, error) {
 		StorageGCWatermark: 90, // 90%
 		GCPeriod:           "1h",
 		HashOnRead:         false,
+		BloomFilterSize:    0,
 	}, nil
 }