diff --git a/xpartamupp/modbot.py b/xpartamupp/modbot.py
index 22825fa..04e039f 100755
--- a/xpartamupp/modbot.py
+++ b/xpartamupp/modbot.py
@@ -505,7 +505,7 @@ async def _muc_check_profanity(self, msg: Message) -> None:
                 key for key, value in detected_languages_sorted if key != "unk" and value == 1.0
             )
             if not languages:
-                languages = (detected_languages_sorted[0][0], "en")
+                languages = tuple(dict.fromkeys([detected_languages_sorted[0][0], "en"]))
             logger.debug(
                 'Detected languages "%s" for the following text: "%s"',
                 ", ".join(languages),