diff --git a/pkg/locales/errors.go b/pkg/locales/errors.go
index fc8929821431f6190e1394706e33c895d07d689a..ec52555571801bec474dcc0589d129745a13f0f5 100644
--- a/pkg/locales/errors.go
+++ b/pkg/locales/errors.go
@@ -12,8 +12,10 @@ var (
 	ErrLocaleValueEmpty               = errors.New("locale value cannot be empty")
 	ErrLocaleIDRequired               = errors.New("locale id is required")
 	ErrLocaleCodeRequired             = errors.New("locale code is required")
+	ErrSetSelfAsFallback              = errors.New("cannot set self as fallback")
 	ErrDisableDefaultLocale           = errors.New("cannot disable default locale")
 	ErrDisablePublishingDefaultLocale = errors.New("cannot disable publishing for default locale")
 	ErrSetDefaultLocaleFallback       = errors.New("cannot set fallback for default locale")
 	ErrDeleteDefaultLocale            = errors.New("cannot delete default locale")
+	ErrChangeDefaultLocaleWeight      = errors.New("cannot change weight for default locale")
 )