diff --git a/swh/indexer/metadata_dictionary/base.py b/swh/indexer/metadata_dictionary/base.py
--- a/swh/indexer/metadata_dictionary/base.py
+++ b/swh/indexer/metadata_dictionary/base.py
@@ -62,7 +62,7 @@
     @classmethod
     def detect_metadata_files(cls, file_entries):
         for entry in file_entries:
-            if entry["name"] == cls.filename:
+            if entry["name"].lower() == cls.filename.lower():
                 return [entry["sha1"]]
         return []