diff --git a/pkg/acl/types.go b/pkg/acl/types.go
index 8bae41ca..ab337a0c 100644
--- a/pkg/acl/types.go
+++ b/pkg/acl/types.go
@@ -1,7 +1,12 @@
 package acl
 
 const (
-	PublicBasicRule   = 0x1FFFFFFF
-	PrivateBasicRule  = 0x18888888
+	// PublicBasicRule is a basic ACL value for public container.
+	PublicBasicRule = 0x1FFFFFFF
+
+	// PrivateBasicRule is a basic ACL value for private container.
+	PrivateBasicRule = 0x18888888
+
+	// ReadOnlyBasicRule is a basic ACL value for read-only container.
 	ReadOnlyBasicRule = 0x1FFF88FF
 )