diff --git a/cmd/frostfs-cli/modules/container/list_objects.go b/cmd/frostfs-cli/modules/container/list_objects.go
index ff2f8cf45..d3bffd67e 100644
--- a/cmd/frostfs-cli/modules/container/list_objects.go
+++ b/cmd/frostfs-cli/modules/container/list_objects.go
@@ -70,7 +70,7 @@ var listContainerObjectsCmd = &cobra.Command{
 					attrs := resHead.Header().Attributes()
 					for i := range attrs {
 						attrKey := attrs[i].Key()
-						if !strings.HasPrefix(attrKey, v2object.SysAttributePrefix) && !strings.HasPrefix(attrKey, v2object.SysAttributePrefixNeoFS) {
+						if !strings.HasPrefix(attrKey, v2object.SysAttributePrefix) {
 							// FIXME(@cthulhu-rider): https://git.frostfs.info/TrueCloudLab/frostfs-sdk-go/issues/97
 							//	Use dedicated method to skip system attributes.
 							cmd.Printf("  %s: %s\n", attrKey, attrs[i].Value())
diff --git a/pkg/core/object/fmt.go b/pkg/core/object/fmt.go
index 96f721806..317d62cb0 100644
--- a/pkg/core/object/fmt.go
+++ b/pkg/core/object/fmt.go
@@ -361,7 +361,7 @@ func (v *FormatValidator) checkIfExpired(ctx context.Context, obj *objectSDK.Obj
 
 func expirationEpochAttribute(obj *objectSDK.Object) (uint64, error) {
 	for _, a := range obj.Attributes() {
-		if a.Key() != objectV2.SysAttributeExpEpoch && a.Key() != objectV2.SysAttributeExpEpochNeoFS {
+		if a.Key() != objectV2.SysAttributeExpEpoch {
 			continue
 		}
 
diff --git a/pkg/local_object_storage/metabase/put.go b/pkg/local_object_storage/metabase/put.go
index ff79a0387..087529895 100644
--- a/pkg/local_object_storage/metabase/put.go
+++ b/pkg/local_object_storage/metabase/put.go
@@ -387,10 +387,6 @@ func hasExpirationEpoch(obj *objectSDK.Object) (uint64, bool) {
 		attributes = ech.ParentAttributes()
 	}
 	for _, attr := range attributes {
-		if attr.Key() == objectV2.SysAttributeExpEpochNeoFS {
-			expEpoch, err := strconv.ParseUint(attr.Value(), 10, 64)
-			return expEpoch, err == nil
-		}
 		if attr.Key() == objectV2.SysAttributeExpEpoch {
 			expEpoch, err := strconv.ParseUint(attr.Value(), 10, 64)
 			return expEpoch, err == nil
diff --git a/pkg/local_object_storage/metabase/upgrade.go b/pkg/local_object_storage/metabase/upgrade.go
index f677dcf8e..b5de430dc 100644
--- a/pkg/local_object_storage/metabase/upgrade.go
+++ b/pkg/local_object_storage/metabase/upgrade.go
@@ -252,7 +252,7 @@ func getNextObjectsWithExpirationEpochBatch(ctx context.Context, db *bbolt.DB, i
 				continue
 			}
 			attributeKey := string(attrKey[1+cidSize:])
-			if attributeKey != objectV2.SysAttributeExpEpochNeoFS && attributeKey != objectV2.SysAttributeExpEpoch {
+			if attributeKey != objectV2.SysAttributeExpEpoch {
 				continue
 			}
 			var containerID cid.ID
diff --git a/pkg/services/object_manager/tombstone/checker.go b/pkg/services/object_manager/tombstone/checker.go
index c3c810001..48a08b693 100644
--- a/pkg/services/object_manager/tombstone/checker.go
+++ b/pkg/services/object_manager/tombstone/checker.go
@@ -74,7 +74,7 @@ func (g *ExpirationChecker) IsTombstoneAvailable(ctx context.Context, a oid.Addr
 
 func (g *ExpirationChecker) handleTS(addr string, ts *objectSDK.Object, reqEpoch uint64) bool {
 	for _, atr := range ts.Attributes() {
-		if atr.Key() == objectV2.SysAttributeExpEpoch || atr.Key() == objectV2.SysAttributeExpEpochNeoFS {
+		if atr.Key() == objectV2.SysAttributeExpEpoch {
 			epoch, err := strconv.ParseUint(atr.Value(), 10, 64)
 			if err != nil {
 				g.log.Warn(