diff --git a/tests/data/slapd-master.conf b/tests/data/slapd-master.conf
index 3f5d831037..9934499be6 100644
--- a/tests/data/slapd-master.conf
+++ b/tests/data/slapd-master.conf
@@ -19,3 +19,4 @@ suffix		"o=University of Michigan, c=US"
 directory	./test-db
 rootdn		"cn=Manager, o=University of Michigan, c=US"
 rootpw		secret
+index		objectClass eq
diff --git a/tests/data/slapd-schema.conf b/tests/data/slapd-schema.conf
index 791c044f21..6852c67012 100644
--- a/tests/data/slapd-schema.conf
+++ b/tests/data/slapd-schema.conf
@@ -28,3 +28,4 @@ argsfile    ./test-db/slapd.args
 database	@BACKEND@
 suffix		"o=OpenLDAP Project, l=Internet"
 directory	./test-db
+index		objectClass eq