diff --git a/bin/tests/system/checkconf/good.conf.in b/bin/tests/system/checkconf/good.conf.in
index b39b20941a..59ecbcec44 100644
--- a/bin/tests/system/checkconf/good.conf.in
+++ b/bin/tests/system/checkconf/good.conf.in
@@ -23,7 +23,7 @@ dnssec-policy "test" {
 	};
 	dnskey-ttl 3600;
 	keys {
-		ksk key-directory lifetime P1Y algorithm 13 256;
+		ksk key-directory lifetime P1Y algorithm 13;
 		zsk lifetime P30D algorithm 13;
 		csk key-store "hsm" lifetime P30D algorithm 8 2048;
 	};