diff --git a/core/loadpoint.go b/core/loadpoint.go
index 6030a474a4..a50daccc79 100644
--- a/core/loadpoint.go
+++ b/core/loadpoint.go
@@ -174,7 +174,7 @@ type Loadpoint struct {
 	progress                *Progress      // Step-wise progress indicator
 
 	// session log
-	db      session.Database
+	db      *session.DB
 	session *session.Session
 
 	tasks *util.Queue[Task] // tasks to be executed
diff --git a/core/session/db.go b/core/session/db.go
index bb1ec43bde..a334425547 100644
--- a/core/session/db.go
+++ b/core/session/db.go
@@ -12,11 +12,6 @@ type DB struct {
 	name string
 }
 
-type Database interface {
-	New(startEnergy float64) *Session
-	Persist(session interface{})
-}
-
 // NewStore creates a session store
 func NewStore(name string, db *gorm.DB) (*DB, error) {
 	err := db.AutoMigrate(new(Session))
diff --git a/core/site.go b/core/site.go
index a335b7d28a..68bc4605ca 100644
--- a/core/site.go
+++ b/core/site.go
@@ -139,13 +139,11 @@ func NewSiteFromConfig(
 
 		if db.Instance != nil {
 			var err error
-			var sessionDb *session.DB
-			if sessionDb, err = session.NewStore(lp.Title(), db.Instance); err != nil {
+			if lp.db, err = session.NewStore(lp.Title(), db.Instance); err != nil {
 				return nil, err
 			}
-			lp.db = sessionDb
 			//Fix any dangling history
-			if err = sessionDb.ClosePendingSessionsInHistory(lp.chargeMeterTotal()); err != nil {
+			if err = lp.db.ClosePendingSessionsInHistory(lp.chargeMeterTotal()); err != nil {
 				return nil, err
 			}