diff --git a/pkg/locales/errors.go b/pkg/locales/errors.go
index 7b6254ed3257beb5eb807ec782997705efb9a182..f5673290341c6813c19a0e21c60849960ce88230 100644
--- a/pkg/locales/errors.go
+++ b/pkg/locales/errors.go
@@ -17,4 +17,5 @@ var (
 	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")
+	ErrDeleteFallbackLocale           = errors.New("cannot delete locale that is used as fallback for other locales")
 )