diff --git a/packages/backend/src/core/activitypub/ApResolverService.ts b/packages/backend/src/core/activitypub/ApResolverService.ts
index 0ef7f5ad56..b3abcd0fb6 100644
--- a/packages/backend/src/core/activitypub/ApResolverService.ts
+++ b/packages/backend/src/core/activitypub/ApResolverService.ts
@@ -129,12 +129,8 @@ export class Resolver {
 			throw new Error('invalid AP object: missing id');
 		}
 
-		const idURL = yumeAssertAcceptableURL(object.id);
-		const valueURL = yumeAssertAcceptableURL(value);
-
-		if (toASCII(idURL.host) !== toASCII(valueURL.host)) {
-			throw new Bull.UnrecoverableError(`invalid AP object ${value}: id ${object.id} has different host`);
-		}
+		yumeAssertAcceptableURL(object.id);
+		yumeAssertAcceptableURL(value);
 
 		return object;
 	}