diff --git a/test/knot-data/knot.conf b/test/knot-data/knot.conf
index 22800f6cea3..b8b9e7925dc 100644
--- a/test/knot-data/knot.conf
+++ b/test/knot-data/knot.conf
@@ -58,6 +58,7 @@ policy:
       ds-push: parent_zone_server
       ksk-lifetime: 365d
       ksk-submission: parent_zone_sbm
+      nsec3-iterations: 0
       nsec3: on
       propagation-delay: 1s
       signing-threads: 4