diff --git a/src/nostr/Thread.js b/src/nostr/Thread.js
index 0ebb438f..d07b4db3 100644
--- a/src/nostr/Thread.js
+++ b/src/nostr/Thread.js
@@ -41,7 +41,7 @@ export default class Thread {
             ret.ReplyTo = reply;
             ret.Mentions = eTags.filter(a => a.Marker === "mention");
         }
-        ret.PubKeys = ev.Tags.filter(a => a.Key === "p").map(a => a.PubKey);
+        ret.PubKeys = [...new Set(ev.Tags.filter(a => a.Key === "p").map(a => a.PubKey))]
         return ret;
     }
 }
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