diff --git a/doc/Changelog b/doc/Changelog
index 4215ea9a6..be52208c8 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -8,6 +8,8 @@
 	- Add rpz: for-downstream: yesno option, where the RPZ zone is
 	  authoritatively answered for, so the RPZ zone contents can be
 	  checked with DNS queries directed at the RPZ zone.
+	- For #602: Allow the module-config "subnetcache validator cachedb
+	  iterator".
 
 11 January 2022: George
 	- Fix prematurely terminated TCP queries when a reply has the same ID.
diff --git a/smallapp/unbound-checkconf.c b/smallapp/unbound-checkconf.c
index c667f8115..fe18c3c83 100644
--- a/smallapp/unbound-checkconf.c
+++ b/smallapp/unbound-checkconf.c
@@ -787,6 +787,10 @@ morechecks(struct config_file* cfg)
 		&& strcmp(cfg->module_conf, "validator python cachedb iterator") != 0
 		&& strcmp(cfg->module_conf, "respip validator python cachedb iterator") != 0
 #endif
+#if defined(CLIENT_SUBNET) && defined(USE_CACHEDB)
+		&& strcmp(cfg->module_conf, "respip subnetcache validator cachedb iterator") != 0
+		&& strcmp(cfg->module_conf, "subnetcache validator cachedb iterator") != 0
+#endif
 #ifdef CLIENT_SUBNET
 		&& strcmp(cfg->module_conf, "subnetcache iterator") != 0
 		&& strcmp(cfg->module_conf, "respip subnetcache iterator") != 0