diff --git a/doc/Changelog b/doc/Changelog
index 0cab2de33..2fd03c09a 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -6,6 +6,7 @@
 3 July 2024: Wouter
 	- Fix #144: Port ipset to BSD pf tables.
 	- Add unit test skip files and bison and flex output to gitignore.
+	- Fix to use modstack_init in zonemd unit test.
 
 2 July 2024: Wouter
 	- Fix to remove unused include from the readzone test program.
diff --git a/testcode/unitzonemd.c b/testcode/unitzonemd.c
index 81d92c102..bf130df5a 100644
--- a/testcode/unitzonemd.c
+++ b/testcode/unitzonemd.c
@@ -256,7 +256,6 @@ static void zonemd_verify_test(char* zname, char* zfile, char* tastr,
 	struct auth_zone* z;
 
 	/* setup test harness */
-	memset(&mods, 0, sizeof(mods));
 	memset(&env, 0, sizeof(env));
 	env.scratch = regional_create();
 	if(!env.scratch)
@@ -287,7 +286,7 @@ static void zonemd_verify_test(char* zname, char* zfile, char* tastr,
 	env.auth_zones = auth_zones_create();
 	if(!env.auth_zones)
 		fatal_exit("out of memory");
-	memset(&mods, 0, sizeof(mods));
+	modstack_init(&mods);
 	if(!modstack_call_startup(&mods, env.cfg->module_conf, &env))
 		fatal_exit("could not modstack_startup");
 	if(!modstack_call_init(&mods, env.cfg->module_conf, &env))