diff --git a/cv4/list_ops.c b/cv4/list_ops.c
index d7e7a74..df5700e 100644
--- a/cv4/list_ops.c
+++ b/cv4/list_ops.c
@@ -48,8 +48,8 @@ size_t length_list(list_t *list) {
 }
 
 list_t *map_list(list_t *list, list_element_t (*mapper)(list_element_t)) {
-    list_t *result = malloc(list->length);
-     if (NULL == result) {
+    list_t *result = new_list(list->length, list->elements);
+     if (result == NULL) {
         return NULL; 
     }
 	for (size_t i = 0; i < list->length; i++) {