diff -r 6bbbf219251d -r 4d12e34bb130 tests/test_list.c
--- a/tests/test_list.c	Thu May 23 20:43:04 2024 +0200
+++ b/tests/test_list.c	Thu May 23 22:06:32 2024 +0200
@@ -1395,7 +1395,7 @@
 roll_out_test_combos(simple_destr, {
     const size_t len = 60;
     int *testdata = int_test_data_added_to_list(list, isptrlist, len);
-    list->collection.simple_destructor = simple_destr_test_fun;
+    cxDefineDestructor(list, simple_destr_test_fun);
     CX_TEST_CALL_SUBROUTINE(test_list_verify_destructor, list, testdata, len);
     free(testdata);
 })
@@ -1403,7 +1403,7 @@
 roll_out_test_combos(advanced_destr, {
     const size_t len = 75;
     int *testdata = int_test_data_added_to_list(list, isptrlist, len);
-    list->collection.advanced_destructor = advanced_destr_test_fun;
+    cxDefineAdvancedDestructor(list, advanced_destr_test_fun, NULL);
     CX_TEST_CALL_SUBROUTINE(test_list_verify_destructor, list, testdata, len);
     free(testdata);
 })