--- a/mod_storage_s3/mod_storage_s3.lua	Sat Oct 14 22:49:12 2023 +0200
+++ b/mod_storage_s3/mod_storage_s3.lua	Sat Oct 14 22:49:57 2023 +0200
@@ -139,7 +139,7 @@
 		bucket;
 		jid.escape(module.host);
 		jid.escape(self.store);
-		jid.escape(key or "");
+		jid.escape(key or "@");
 	})
 end