diff --git a/test/list_test.c b/test/list_test.c
index 67af033..3c08fd9 100644
--- a/test/list_test.c
+++ b/test/list_test.c
@@ -1089,10 +1089,14 @@ static MunitResult test_reduce2(const MunitParameter params[], void* fixture)
     *c = true;
     *d = true;
 
-    bool res;
+    cc_list_add(list, a);
+    cc_list_add(list, b);
+    cc_list_add(list, c);
+    cc_list_add(list, d);
 
-    cc_list_reduce(list, bool_and, &res);
+    bool res = false;
 
+    cc_list_reduce(list, bool_and, &res);
     munit_assert_true(res);
 
     cc_list_destroy(list);