diff --git a/src/client/app/desktop/views/pages/user/user.header.vue b/src/client/app/desktop/views/pages/user/user.header.vue
index a8e7895f57..81398b9862 100644
--- a/src/client/app/desktop/views/pages/user/user.header.vue
+++ b/src/client/app/desktop/views/pages/user/user.header.vue
@@ -18,7 +18,7 @@
 		</div>
 		<div class="info">
 			<span class="location" v-if="user.host === null && user.profile.location">%fa:map-marker% {{ user.profile.location }}</span>
-			<span class="birthday" v-if="user.host === null && user.profile.birthday">%fa:birthday-cake% {{ user.profile.birthday.replace('-', '年').replace('-', '月') + '日' }} ({{ age }}歳)</span>
+			<span class="birthday" v-if="user.host === null && user.profile.birthday">%fa:birthday-cake% {{ user.profile.birthday.replace('-', '%i18n:@year%').replace('-', '%i18n:@month%') + '%i18n:@day%' }} ({{ age }}%i18n:@years-old%)</span>
 		</div>
 		<div class="status">
 			<span class="notes-count"><b>{{ user.notesCount | number }}</b>%i18n:@posts%</span>