diff --git a/sql/upgrade.sql b/sql/upgrade.sql
index e69de29bb..db56945e7 100644
--- a/sql/upgrade.sql
+++ b/sql/upgrade.sql
@@ -0,0 +1,3 @@
+-- improve vw_fiche_attr
+drop index if exists fiche_detail_attr_ix;
+create index fiche_detail_attr_ix on fiche_detail (ad_id);