diff --git a/socceraction/data/opta/loader.py b/socceraction/data/opta/loader.py
index e13f364d..cd54c208 100644
--- a/socceraction/data/opta/loader.py
+++ b/socceraction/data/opta/loader.py
@@ -323,26 +323,6 @@ def _get_parsers_for_feeds(
                 warnings.warn(f"No parser available for {feed} feeds. This feed is ignored.")
         return parsers
 
-    def file_names(self, competition_id: int, season_id: int):
-        """Return a list of all the file names in the data folder of a given season.
-
-        Parameters
-        ----------
-        competition_id : int
-            The ID of the competition.
-        season_id : int
-            The ID of the season.
-        """
-        # feed = 'ma1'
-        feed_pattern = '{competition_id}\\{season_id}\\MA1\\{game_id}.json'
-        glob_pattern = feed_pattern.format(
-            competition_id=competition_id, season_id=season_id, game_id="*"
-        )
-        feed_files = glob.glob(os.path.join(self.root, glob_pattern))
-        for i in range(len(feed_files)):
-            feed_files[i] = feed_files[i][25:][:-5]
-        return feed_files
-
     def competitions(self) -> DataFrame[OptaCompetitionSchema]:
         """Return a dataframe with all available competitions and seasons.