diff --git a/packages/backend/src/core/activitypub/ApRequestService.ts b/packages/backend/src/core/activitypub/ApRequestService.ts
index b949f34841..bfd53dfabf 100644
--- a/packages/backend/src/core/activitypub/ApRequestService.ts
+++ b/packages/backend/src/core/activitypub/ApRequestService.ts
@@ -40,7 +40,8 @@ export class ApRequestService {
 		private httpRequestService: HttpRequestService,
 		private loggerService: LoggerService,
 	) {
-		this.logger = this.loggerService.getLogger('ap-request'); // なぜか TypeError: Cannot read properties of undefined (reading 'getLogger') と言われる
+		// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+		this.logger = this.loggerService?.getLogger('ap-request'); // なぜか TypeError: Cannot read properties of undefined (reading 'getLogger') と言われる
 	}
 
 	@bindThis