diff --git a/network/mail/thunderbird/pspec.xml b/network/mail/thunderbird/pspec.xml
index 91faecc399..7fe6ff5594 100644
--- a/network/mail/thunderbird/pspec.xml
+++ b/network/mail/thunderbird/pspec.xml
@@ -432,6 +432,8 @@
     <Package>
         <Name>thunderbird-lang-uk</Name>
         <Icon>lang-uk</Icon>
+        <IsA>locale:uk</IsA>
+        <PartOf>system.locale</PartOf>
         <Summary>Український мовний пакет для Thunderbird</Summary>
         <RuntimeDependencies>
             <Dependency releaseFrom="current">thunderbird</Dependency>