diff --git a/storage/files/files.go b/storage/files/files.go
index a5cbbe7..fc56d79 100644
--- a/storage/files/files.go
+++ b/storage/files/files.go
@@ -12,6 +12,7 @@ import (
 	"time"
 
 	//"git.mtux.eu/darkgopher/session"
+	"git.mtux.eu/darkgopher/session"
 	"github.com/djherbis/atime"
 )
 
@@ -24,7 +25,7 @@ var pder *ProviderFiles
 
 func init() {
 	pder = &ProviderFiles{}
-	//session.Register("files", pder)
+	session.Register("files", pder)
 }
 
 // ckdirpath return filename from sid
@@ -63,7 +64,7 @@ func (pder *ProviderFiles) SetParams(p any) (err error) {
 }
 
 // Init create empty session file if not exists and retturn *Session
-func (pder *ProviderFiles) Init(sid string) (sess *SessionFile, err error) {
+func (pder *ProviderFiles) Init(sid string) (sess session.Session, err error) {
 	pder.lock.Lock()
 	defer pder.lock.Unlock()
 	var fd *os.File
@@ -75,11 +76,11 @@ func (pder *ProviderFiles) Init(sid string) (sess *SessionFile, err error) {
 	sess = &SessionFile{sid}
 	ssel := pder.list.PushBack(sess)
 	pder.sessions[sid] = ssel
-	return
+	return sess, nil
 }
 
 // Load return existing session by sid or new session if not exists
-func (pder *ProviderFiles) Load(sid string) (sess *SessionFile, err error) {
+func (pder *ProviderFiles) Load(sid string) (sess session.Session, err error) {
 	pder.lock.Lock()
 	defer pder.lock.Unlock()
 	if pder.Exists(sid) {
@@ -103,17 +104,16 @@ func (pder *ProviderFiles) Destroy(sid string) (err error) {
 
 // ChangeID change oldsid to newsid and preserve session data
 func (pder *ProviderFiles) ChangeID(oldsid, newsid string) (err error) {
-	/*if ssel, ok := pder.sessions[oldsid]; ok {
+	if ssel, ok := pder.sessions[oldsid]; ok {
 		ckfold := ckdirpath(oldsid)
 		ckfnew := ckdirpath(newsid)
 		if err = os.Rename(ckfold, ckfnew); err != nil {
 			return fmt.Errorf("Rename cookie file: %s to: %s failed: %v", ckfold, ckfnew, err)
 		}
-		oldssel := pder.sessions[oldsid]
-		pder.list.Remove(oldssel)
+		ssel.Value.(*SessionFile).sid = newsid
 		delete(pder.sessions, oldsid)
-	}*/
-
+		pder.sessions[newsid] = ssel
+	}
 	return
 }
 
@@ -126,6 +126,30 @@ func (pder *ProviderFiles) Exists(sid string) bool {
 	return true
 }
 
+// GC periodically remove old sessions rom storages
+func (pder *ProviderFiles) GC(maxlifetime int64) {
+	pder.lock.Lock()
+	defer pder.lock.Unlock()
+	for {
+		ssel := pder.list.Back()
+		if ssel == nil {
+			break
+		}
+		sid := ssel.Value.(*SessionFile).sid
+		var at time.Time
+		var err error
+		if at, err = pder.getAtime(sid); err != nil {
+			continue
+		}
+		if at.UnixMilli()+(maxlifetime*session.MilisPerSec()) < time.Now().UnixMilli() {
+			pder.list.Remove(ssel)
+			delete(pder.sessions, sid)
+			ckf := ckdirpath(sid)
+			os.Remove(ckf)
+		}
+	}
+}
+
 // SessionFile save session data into files using gob encode/dacode
 type SessionFile struct {
 	sid string
diff --git a/storage/memory/memory.go b/storage/memory/memory.go
index 608f1ab..0a9e9be 100644
--- a/storage/memory/memory.go
+++ b/storage/memory/memory.go
@@ -85,9 +85,8 @@ func (pder *ProviderMemory) ChangeID(oldsid, newsid string) (err error) {
 	defer pder.lock.Unlock()
 	if ssel, ok := pder.sessions[oldsid]; ok {
 		ssel.Value.(*SessionMemory).sid = newsid //set internal sid to new
-		le := pder.sessions[oldsid]              //get list el with old sid
 		delete(pder.sessions, oldsid)            //remove old sid in map
-		pder.sessions[newsid] = le               //add new sid into map
+		pder.sessions[newsid] = ssel             //add new sid into map
 	}
 	return
 }