diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index f1bc346a1c..c31f93394e 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -71,7 +71,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</I18n> - <button class="_textButton" @click="cancelSchedule()">{{ i18n.ts.cancel }}</button>
 	</MkInfo>
 	<MkInfo v-if="!$i.policies.canNote" warn :class="$style.formWarn">{{ i18n.ts.youAreNotAllowedToCreateNote }}</MkInfo>
-	<MkInfo v-if="hasNotSpecifiedMentions" warn :class="$style.hasNotSpecifiedMentions">{{ i18n.ts.notSpecifiedMentionWarning }} - <button class="_textButton" @click="addMissingMention()">{{ i18n.ts.add }}</button></MkInfo>
+	<MkInfo v-if="hasNotSpecifiedMentions" warn :class="$style.formWarn">{{ i18n.ts.notSpecifiedMentionWarning }} - <button class="_textButton" @click="addMissingMention()">{{ i18n.ts.add }}</button></MkInfo>
 	<div v-show="useCw" :class="$style.cwOuter">
 		<input ref="cwInputEl" v-model="cw" :class="$style.cw" :placeholder="i18n.ts.annotation" @keydown="onKeydown" @keyup="onKeyup" @compositionend="onCompositionEnd">
 		<div v-if="maxCwTextLength - cwTextLength < 20" :class="['_acrylic', $style.cwTextCount, { [$style.cwTextOver]: cwTextLength > maxCwTextLength }]">{{ maxCwTextLength - cwTextLength }}</div>