diff --git a/packages/backend/src/server/FileServerService.ts b/packages/backend/src/server/FileServerService.ts
index f6edd1a89e..67100b1451 100644
--- a/packages/backend/src/server/FileServerService.ts
+++ b/packages/backend/src/server/FileServerService.ts
@@ -124,9 +124,6 @@ export class FileServerService {
 		}
 
 		if (request.headers.range && 'file' in file && file.size > 0) {
-			// Development mode: handle byte range requests
-			// See https://github.com/misskey-dev/misskey/issues/16506
-
 			const range = request.headers.range as string;
 			const parts = range.replace(/bytes=/, '').split('-');
 			const start = parseInt(parts[0], 10);