diff --git a/api/activitypub/sendNote.ts b/api/activitypub/sendNote.ts
index c75e288467a6a57412cc9bc86ff7f98ffb2b6a4c..5ce73ebd5bb41d50a571b275113c2299d5663f14 100644
--- a/api/activitypub/sendNote.ts
+++ b/api/activitypub/sendNote.ts
@@ -104,8 +104,9 @@ export default async function (req: VercelRequest, res: VercelResponse) {
     }
   }
 
+  sentIds.push(sendingIds);
   configRef.set({
-    "sentIds": sentIds.concat(sendingIds),
+    "sentIds": sentIds,
     "lastEpoch": new Date().getTime()
   });