diff --git a/app.go b/app.go
index e5ae490..dc56ddc 100644
--- a/app.go
+++ b/app.go
@@ -108,14 +108,14 @@ func newApp(opt ...Option) App {
 	a.reqHealth = new(state.HealthRequest)
 	a.reqHealth.SetTTL(service.NonForwardingTTL)
 
-	if err := service.SignRequestHeader(a.key, a.reqHealth); err != nil {
+	if err := service.SignDataWithSessionToken(a.key, a.reqHealth); err != nil {
 		a.log.Fatal("could not sign `HealthRequest`", zap.Error(err))
 	}
 
 	a.reqNetmap = new(state.NetmapRequest)
 	a.reqNetmap.SetTTL(service.SingleForwardingTTL)
 
-	if err := service.SignRequestHeader(a.key, a.reqNetmap); err != nil {
+	if err := service.SignDataWithSessionToken(a.key, a.reqNetmap); err != nil {
 		a.log.Fatal("could not sign `NetmapRequest`", zap.Error(err))
 	}
 
diff --git a/receive.go b/receive.go
index 7f09ff4..2771bd7 100644
--- a/receive.go
+++ b/receive.go
@@ -76,7 +76,7 @@ func (a *app) receiveFile(c *fasthttp.RequestCtx) {
 	req := &object.GetRequest{Address: refs.Address{ObjectID: oid, CID: cid}}
 	req.SetTTL(service.SingleForwardingTTL)
 
-	if err = service.SignRequestHeader(a.key, req); err != nil {
+	if err = service.SignDataWithSessionToken(a.key, req); err != nil {
 		log.Error("could not sign request", zap.Error(err))
 		c.Error("could not sign request", fasthttp.StatusBadRequest)
 		return