diff --git a/providers/http/frostfs/frostfs.go b/providers/http/frostfs/frostfs.go
index 81d79724..813fa455 100644
--- a/providers/http/frostfs/frostfs.go
+++ b/providers/http/frostfs/frostfs.go
@@ -8,6 +8,7 @@ import (
 	"errors"
 	"fmt"
 	"strconv"
+	"strings"
 	"time"
 
 	"github.com/go-acme/lego/v4/challenge"
@@ -46,7 +47,9 @@ func NewHTTPProvider(endpoint, cid, walletPath, walletAccount, walletPassword st
 }
 
 func (w *HTTPProvider) Present(domain, token, keyAuth string) error {
-	var err error
+	if strings.Contains(token, "/") {
+		return fmt.Errorf("token with slash character is not supported: %s", token)
+	}
 	if w.oid != "" {
 		return fmt.Errorf("%T is not safe to re-enter: object was saved and not yet cleaned up: %s", w, w.oid)
 	}
@@ -54,6 +57,7 @@ func (w *HTTPProvider) Present(domain, token, keyAuth string) error {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
+	var err error
 	expires, err := w.frostfs.Epoch(ctx, time.Now().Add(tokenLifetime))
 	if err != nil {
 		return fmt.Errorf("failed to calculate token expiration: %w", err)