diff --git a/packages/frontend/src/pages/announcement.vue b/packages/frontend/src/pages/announcement.vue
index 56c10fb292..baa2c1804f 100644
--- a/packages/frontend/src/pages/announcement.vue
+++ b/packages/frontend/src/pages/announcement.vue
@@ -27,7 +27,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<Mfm :text="announcement.title"/>
 				</div>
 				<div :class="$style.content">
-					<Mfm :text="announcement.text"/>
+					<Mfm :text="announcement.text" :isBlock="true"/>
 					<img v-if="announcement.imageUrl" :src="announcement.imageUrl"/>
 					<div style="margin-top: 8px; opacity: 0.7; font-size: 85%;">
 						{{ i18n.ts.createdAt }}: <MkTime :time="announcement.createdAt" mode="detail"/>