diff --git a/frontend/src/routes/memos/+page.svelte b/frontend/src/routes/memos/+page.svelte
index b3d76a2..e807f3e 100644
--- a/frontend/src/routes/memos/+page.svelte
+++ b/frontend/src/routes/memos/+page.svelte
@@ -125,7 +125,16 @@
 
   function addDueDate() {
     const ta = document.querySelector('[data-memo-input]');
-    insertAtCursor(ta, ` @${todayIso()}`);
+    if (!ta) return;
+    const start = ta.selectionStart;
+    const end = ta.selectionEnd;
+    const ins = ` @${todayIso()}`;
+    newContent = newContent.slice(0, start) + ins + newContent.slice(end);
+    requestAnimationFrame(() => {
+      const pos = start + ins.length;
+      ta.focus();
+      ta.setSelectionRange(pos, pos);
+    });
   }
 
   // 편집 모드 툴바