diff --git a/src/index.ts b/src/index.ts
index 0863044..1bf9afc 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -85,6 +85,7 @@ async function main() {
       roomId === process.env.MATRIX_ROOM_ID &&
       event['content'] &&
       ['т', 'н'].includes(event['content']['body'].split('\n').at(-1).trim()) &&
+      event['content']['m.relates_to'] &&
       event['content']['m.relates_to']['m.in_reply_to']
     ) {
       const post = await db.post.findUnique({