diff --git a/quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip01Core/store/sqlite/EventIndexesModule.kt b/quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip01Core/store/sqlite/EventIndexesModule.kt
index 035cc0a40..bd3d90ef3 100644
--- a/quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip01Core/store/sqlite/EventIndexesModule.kt
+++ b/quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip01Core/store/sqlite/EventIndexesModule.kt
@@ -65,6 +65,8 @@ class EventIndexesModule(
 
         // queries by ID (load events)
         db.execSQL("CREATE UNIQUE INDEX event_headers_id       ON event_headers (id)")
+
+        // queries by limit (latest records), since, until (sync all) alone
         db.execSQL("CREATE INDEX query_by_created_at_id        ON event_headers (created_at DESC, id)")
 
         // need to check if this is actually needed.