diff --git a/misc-scripts/ontology/sql/patch_95_96_b.sql b/misc-scripts/ontology/sql/patch_95_96_b.sql
index 53b216f65faf6e23f467a7acab8a26fd2861ff58..6cc68e024a0e097ca435eba9449a2701584fc942 100644
--- a/misc-scripts/ontology/sql/patch_95_96_b.sql
+++ b/misc-scripts/ontology/sql/patch_95_96_b.sql
@@ -35,5 +35,7 @@ ALTER TABLE `term` DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
 
 ALTER TABLE `synonym` DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
 
+CREATE INDEX ix_closure_subparent_term_id USING BTREE ON closure (`subparent_term_id`);
+CREATE INDEX ix_closure_ontology_id USING BTREE ON closure (`ontology_id`);