diff --git a/pool/pool.go b/pool/pool.go
index fdfaa84..6e65f9c 100644
--- a/pool/pool.go
+++ b/pool/pool.go
@@ -10,7 +10,6 @@ import (
 	"math"
 	"math/rand"
 	"sort"
-	"strings"
 	"sync"
 	"time"
 
@@ -1225,8 +1224,7 @@ func (p *Pool) checkSessionTokenErr(err error, address string) bool {
 		return false
 	}
 
-	if strings.Contains(err.Error(), "session token does not exist") ||
-		strings.Contains(err.Error(), "session token has been expired") {
+	if sdkClient.IsErrSessionNotFound(err) || sdkClient.IsErrSessionExpired(err) {
 		p.cache.DeleteByPrefix(address)
 		return true
 	}
@@ -1768,8 +1766,7 @@ func waitForContainerRemoved(ctx context.Context, cli client, cnrID *cid.ID, wai
 
 	return waitFor(ctx, waitParams, func(ctx context.Context) bool {
 		_, err := cli.containerGet(ctx, prm)
-		return sdkClient.IsErrContainerNotFound(err) ||
-			err != nil && strings.Contains(err.Error(), "not found")
+		return sdkClient.IsErrContainerNotFound(err)
 	})
 }
 
diff --git a/pool/pool_test.go b/pool/pool_test.go
index 805bca8..9d1ff03 100644
--- a/pool/pool_test.go
+++ b/pool/pool_test.go
@@ -13,6 +13,7 @@ import (
 	"github.com/golang/mock/gomock"
 	"github.com/google/uuid"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
 	"github.com/nspcc-dev/neofs-sdk-go/container"
 	neofsecdsa "github.com/nspcc-dev/neofs-sdk-go/crypto/ecdsa"
 	"github.com/nspcc-dev/neofs-sdk-go/netmap"
@@ -387,7 +388,7 @@ func TestSessionCache(t *testing.T) {
 		}).MaxTimes(3)
 		mockClient.EXPECT().networkInfo(gomock.Any(), gomock.Any()).Return(&netmap.NetworkInfo{}, nil).AnyTimes()
 
-		mockClient.EXPECT().objectGet(gomock.Any(), gomock.Any()).Return(nil, fmt.Errorf("session token does not exist"))
+		mockClient.EXPECT().objectGet(gomock.Any(), gomock.Any()).Return(nil, apistatus.SessionTokenNotFound{})
 		mockClient.EXPECT().objectPut(gomock.Any(), gomock.Any()).Return(nil, nil)
 
 		return mockClient, nil