diff --git a/api/cache/system.go b/api/cache/system.go
index 95bd1396..cf091584 100644
--- a/api/cache/system.go
+++ b/api/cache/system.go
@@ -119,7 +119,7 @@ func (o *SystemCache) GetNotificationConfiguration(key string) *data.Notificatio
 	return result
 }
 
-// GetTagging returns tags of a bucket or an object
+// GetTagging returns tags of a bucket or an object.
 func (o *SystemCache) GetTagging(key string) map[string]string {
 	entry, err := o.cache.Get(key)
 	if err != nil {
@@ -156,7 +156,7 @@ func (o *SystemCache) PutNotificationConfiguration(key string, obj *data.Notific
 	return o.cache.Set(key, obj)
 }
 
-// PutTagging puts tags of a bucket or an object
+// PutTagging puts tags of a bucket or an object.
 func (o *SystemCache) PutTagging(key string, tagSet map[string]string) error {
 	return o.cache.Set(key, tagSet)
 }
diff --git a/api/layer/notifications.go b/api/layer/notifications.go
index f814eace..0ee32b48 100644
--- a/api/layer/notifications.go
+++ b/api/layer/notifications.go
@@ -66,15 +66,15 @@ func (n *layer) GetBucketNotificationConfiguration(ctx context.Context, bktInfo
 		return conf, nil
 	}
 
-	objId, err := n.treeService.GetNotificationConfigurationNode(ctx, &bktInfo.CID)
+	objID, err := n.treeService.GetNotificationConfigurationNode(ctx, &bktInfo.CID)
 	if err != nil && !errorsStd.Is(err, ErrNodeNotFound) {
 		return nil, err
 	}
 
 	conf := &data.NotificationConfiguration{}
 
-	if objId != nil {
-		obj, err := n.objectGet(ctx, bktInfo, *objId)
+	if objID != nil {
+		obj, err := n.objectGet(ctx, bktInfo, *objID)
 		if err != nil {
 			return nil, err
 		}
diff --git a/internal/neofs/tree_signature.go b/internal/neofs/tree_signature.go
index e82e8eeb..4b7d91f2 100644
--- a/internal/neofs/tree_signature.go
+++ b/internal/neofs/tree_signature.go
@@ -1,4 +1,4 @@
-/* REMOVE THIS AFTER SIGNATURE WILL BE AVAILABLE IN TREE CLIENT FROM NEOFS NODE */
+/*REMOVE THIS AFTER SIGNATURE WILL BE AVAILABLE IN TREE CLIENT FROM NEOFS NODE*/
 package neofs
 
 import (