diff --git a/cv4/list_ops.c b/cv4/list_ops.c
index 8c66e6f..b535771 100644
--- a/cv4/list_ops.c
+++ b/cv4/list_ops.c
@@ -8,7 +8,7 @@ list_t *new_list(size_t length, list_element_t elements[]){
 
 }
 
-list_t *append_list(list_t *list1, list_t *list2){
+/*list_t *append_list(list_t *list1, list_t *list2){
   return NULL;
 
 }
@@ -51,4 +51,4 @@ list_t *reverse_list(list_t *list){
 
 void delete_list(list_t *list){
 
-} 
\ No newline at end of file
+}*/
\ No newline at end of file