diff --git a/src/bot.ts b/src/bot.ts
index d13025b6..6b5b3780 100644
--- a/src/bot.ts
+++ b/src/bot.ts
@@ -1325,7 +1325,7 @@ export class DiscordBot {
                 "m.annotation"
             );
 
-            const filteredChunk = chunk.filter((event) => event.sender === this.bridge.botUserId);
+            const filteredChunk = chunk.filter((event) => this.bridge.isNamespacedUser(event.sender));
 
             await Promise.all(filteredChunk.map(async (event) => {
                 try {