diff --git a/CHANGELOG.md b/CHANGELOG.md
index a39aa3c8fb..4b4c0e3924 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,7 @@
 -
 
 ### Server
--
+- Fix: 個別お知らせページのmetaタグ出力の条件が間違っていたのを修正
 
 
 ## 2025.1.0
diff --git a/packages/backend/src/server/web/ClientServerService.ts b/packages/backend/src/server/web/ClientServerService.ts
index 4c884dd314..f8b3843cac 100644
--- a/packages/backend/src/server/web/ClientServerService.ts
+++ b/packages/backend/src/server/web/ClientServerService.ts
@@ -817,6 +817,7 @@ export class ClientServerService {
 		fastify.get<{ Params: { announcementId: string; } }>('/announcements/:announcementId', async (request, reply) => {
 			const announcement = await this.announcementsRepository.findOneBy({
 				id: request.params.announcementId,
+				userId: IsNull(),
 			});
 
 			if (announcement) {