diff --git a/srcs/bonus/.ft_lstdelone.c.swp b/srcs/bonus/.ft_lstdelone.c.swp
new file mode 100644
index 0000000..d9d49e0
Binary files /dev/null and b/srcs/bonus/.ft_lstdelone.c.swp differ
diff --git a/srcs/bonus/a.out b/srcs/bonus/a.out
index 6a73564..18d0f88 100755
Binary files a/srcs/bonus/a.out and b/srcs/bonus/a.out differ
diff --git a/srcs/bonus/ft_lstadd_back.c b/srcs/bonus/ft_lstadd_back.c
index 99117c2..2c7eec9 100644
--- a/srcs/bonus/ft_lstadd_back.c
+++ b/srcs/bonus/ft_lstadd_back.c
@@ -92,7 +92,7 @@ void	ft_lstadd_back(t_list **alst, t_list *new)
 				tmp = tmp->next;
 			tmp->next = new;
 		}
-		new->content = NULL;
+		new->next = NULL;
 	}
 }
 
diff --git a/srcs/bonus/ft_lstdelone.c b/srcs/bonus/ft_lstdelone.c
new file mode 100644
index 0000000..a86635b
--- /dev/null
+++ b/srcs/bonus/ft_lstdelone.c
@@ -0,0 +1,99 @@
+	
+	#include <libc.h>
+	
+	typedef struct		s_list
+	{
+		void			*content;
+		struct s_list	*next;
+	}					t_list;
+	
+	void	*ft_memcpy(void *dst, const void *src, size_t n)
+	{
+		size_t	i;
+		char	*ptr;
+		char	*ptr2;
+	
+		ptr = (char *)dst;
+		ptr2 = (char *)src;
+		i = -1;
+		while (++i < n)
+			ptr[i] = ptr2[i];
+		return (dst);
+	}
+	
+	t_list	*ft_lstnew(void *content)
+	{
+		t_list		*lst;
+	
+		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+			return (NULL);
+		if (!content)
+			lst->content = NULL;
+		else
+		{
+			if (!(lst->content = malloc(sizeof(content))))
+				return (NULL);
+			ft_memcpy(lst->content, content, sizeof(content));
+		}
+		lst->next = NULL;
+		return (lst);
+	}
+	
+	void	ft_lstadd_back(t_list **alst, t_list *new)
+	{
+		t_list	*tmp;
+	
+		if (alst)
+		{
+			tmp = *alst;
+			if (!tmp)
+				*alst = new;
+			else
+			{
+				while (tmp->next)
+					tmp = tmp->next;
+				tmp->next = new;
+			}
+			new->next = NULL;
+		}
+	}
+	
+	void	ft_lstdelone(t_list *lst, void (*del)(void *));
+	
+	int	main(void)
+	{
+		char	tresor;
+		char	matos;
+		char	friends;
+		t_list	*toto;
+		t_list	*tmp;
+	
+		tresor = 'a';
+		matos = 'b';
+		friends = 'c';
+		toto = ft_lstnew(&tresor);
+		printf("toto->data          :%c\n",*(char*)(toto->content));
+		tmp = ft_lstnew(&matos);
+		ft_lstadd_back(&toto, tmp);
+		printf("----------------------\n");
+		printf("toto->data          :%c\n",*(char*)(toto->content));
+		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+		tmp = ft_lstnew(&friends);
+		ft_lstadd_back(&toto, tmp);
+		printf("----------------------\n");
+		printf("toto->data          :%c\n",*(char*)(toto->content));
+		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+		return (0);
+	}
+	
+
+//#include "libft.h"
+
+void	ft_lstdelone(t_list *lst, void (*del)(void *))
+{
+	del(lst->content);
+	free(lst);
+	lst = NULL;
+}
diff --git a/srcs/bonus/lstdelone.c b/srcs/bonus/lstdelone.c
deleted file mode 100644
index e2b85c2..0000000
--- a/srcs/bonus/lstdelone.c
+++ /dev/null
@@ -1,20 +0,0 @@
-/* ************************************************************************** */
-/*                                                                            */
-/*                                                        :::      ::::::::   */
-/*   ft_lstdelone.c                                     :+:      :+:    :+:   */
-/*                                                    +:+ +:+         +:+     */
-/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
-/*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2018/11/14 21:10:59 by hulamy            #+#    #+#             */
-/*   Updated: 2018/11/16 13:59:22 by hulamy           ###   ########.fr       */
-/*                                                                            */
-/* ************************************************************************** */
-
-#include "libft.h"
-
-void	ft_lstdelone(t_list **alst, void (*del)(void *, size_t))
-{
-	del((*alst)->content, (*alst)->content_size);
-	free(*alst);
-	*alst = NULL;
-}