diff --git a/packages/backend/src/core/activitypub/models/ApImageService.ts b/packages/backend/src/core/activitypub/models/ApImageService.ts
index e0e219244f..b563f2c35f 100644
--- a/packages/backend/src/core/activitypub/models/ApImageService.ts
+++ b/packages/backend/src/core/activitypub/models/ApImageService.ts
@@ -50,6 +50,8 @@ export class ApImageService {
 			throw new Error('invalid image: url not privided');
 		}
 
+		// TODO?
+		// const url = getOneApHrefNullable(image.url);
 		if (typeof image.url !== 'string') {
 			throw new Error('invalid image: unexpected type of url: ' + JSON.stringify(image.url));
 		}