diff --git a/twitter_utils/services.py b/twitter_utils/services.py
index 1ce0598d64917bed8d93cdc40eeb97396a714a0c..6bfa4f1ead609017288bf2544bc23593d3ad198c 100644
--- a/twitter_utils/services.py
+++ b/twitter_utils/services.py
@@ -68,7 +68,9 @@ class TweetDownloadService:
         homepage_username_list = [
             username_data["value"] for username_data in twitter_usernames_block.raw_data
         ]
-        username_list = [*person_username_list, *homepage_username_list]
+
+        # kvůli duplicitám udělám list/set/list konverzi
+        username_list = list({*person_username_list, *homepage_username_list})
 
         user_data_list = []