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 e8410d5a5..c30fda299 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
@@ -63,6 +63,7 @@ class EventIndexesModule(
             """.trimIndent(),
         )
 
+        // queries by ID (load events)
         db.execSQL("CREATE UNIQUE INDEX event_headers_id       ON event_headers (id)")
         db.execSQL("CREATE INDEX query_by_kind_pubkey_dtag_idx ON event_headers (kind, pubkey, d_tag)")
         db.execSQL("CREATE INDEX query_by_created_at_id        ON event_headers (created_at DESC, id)")