diff --git a/tests/unittests/tests-registry_storage_heap/tests-registry_storage_heap.c b/tests/unittests/tests-registry_storage_heap/tests-registry_storage_heap.c
index eb6ed5b98919..5948cfc7d0d6 100644
--- a/tests/unittests/tests-registry_storage_heap/tests-registry_storage_heap.c
+++ b/tests/unittests/tests-registry_storage_heap/tests-registry_storage_heap.c
@@ -68,8 +68,10 @@ static void tests_load_and_save(void)
 {
     registry_node_t node = {
         .type = REGISTRY_NODE_PARAMETER,
-        .location.parameter = &registry_tests_nested_group_parameter,
-        .instance = &test_nested_instance,
+        .value.parameter = {
+            .instance = &test_nested_instance,
+            .parameter = &registry_tests_nested_group_parameter,
+        },
     };
 
     /* set input to 8 */