diff --git a/src/views/board/BoardView.vue b/src/views/board/BoardView.vue
index 844a5a1..eccf4e9 100644
--- a/src/views/board/BoardView.vue
+++ b/src/views/board/BoardView.vue
@@ -441,7 +441,9 @@
 
     // 게시글 삭제 버튼 클릭
     const deleteClick = unknown => {
-        if (unknown.value) {
+        const isUnknown = unknown?.unknown ?? false;
+
+        if (isUnknown) {
             togglePassword('delete');
         } else {
             deletePost();