checkconf test failure on Solaris

There seems to be something wrong with interval parser/printer:

--- good-kasp.conf.in   2019-12-06 09:05:30.604845787 +0000
+++ good-kasp.conf.out  2019-12-06 09:05:30.614674414 +0000
@@ -1,5 +1,5 @@
 dnssec-policy "test" {
-       dnskey-ttl 3600;
+       dnskey-ttl 3600PT3600S;
        keys {
                ksk key-directory lifetime P1Y algorithm 13 256;
                zsk key-directory lifetime P30D algorithm 13;
@@ -10,9 +10,9 @@
        signatures-refresh P3D;
        signatures-validity P2W;
        signatures-validity-dnskey P14D;
-       zone-max-ttl 86400;
+       zone-max-ttl 86400PT86400S;
        zone-propagation-delay PT5M;
-       parent-ds-ttl 7200;
+       parent-ds-ttl 7200PT7200S;
        parent-propagation-delay PT1H;
        parent-registration-delay P1D;
 };