diff --git a/src/storages/EventsDB.ts b/src/storages/EventsDB.ts
index 4a0a0096..f79c0180 100644
--- a/src/storages/EventsDB.ts
+++ b/src/storages/EventsDB.ts
@@ -92,6 +92,8 @@ class EventsDB extends NPostgres {
       }
     }
 
+    ext.protocol = event.tags.find(([name]) => name === 'proxy')?.[2] ?? 'nostr';
+
     return ext;
   }