diff --git a/sites/programtv.onet.pl.config.js b/sites/programtv.onet.pl.config.js
index 1474348f..047f42c8 100644
--- a/sites/programtv.onet.pl.config.js
+++ b/sites/programtv.onet.pl.config.js
@@ -11,6 +11,7 @@ dayjs.extend(customParseFormat)
 
 module.exports = {
   days: 3,
+  lang: 'pl',
   site: 'programtv.onet.pl',
   url: function ({ date, channel }) {
     const today = dayjs().utc().startOf('d')