diff --git a/playbooks/roles/gerrit/templates/gerrit.config.j2 b/playbooks/roles/gerrit/templates/gerrit.config.j2
index cbebbaf71c..96bc022b5a 100644
--- a/playbooks/roles/gerrit/templates/gerrit.config.j2
+++ b/playbooks/roles/gerrit/templates/gerrit.config.j2
@@ -156,6 +156,7 @@
 	tag = ${project}/src/tag/${tag}
 	url = https://opendev.org/
 [index]
+	maxTerms = 1536
 	type = LUCENE
 	threads = 8
 [download]