diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index 216a4f3666..99cf4235b3 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -356,7 +356,7 @@ if (props.channel) {
 }
 
 // 公開以外へのリプライ時は元の公開範囲を引き継ぐ
-if (props.reply && ['home', 'followers', 'specified'].includes(props.reply.visibility)) {
+if (props.reply && ['home', 'followers', 'specified', 'private'].includes(props.reply.visibility)) {
 	if (props.reply.visibility === 'home' && visibility.value === 'followers') {
 		visibility.value = 'followers';
 	} else if (['home', 'followers'].includes(props.reply.visibility) && visibility.value === 'specified') {