diff --git a/builds/push_swap.o b/builds/push_swap.o
index 145675d..634cf6e 100644
Binary files a/builds/push_swap.o and b/builds/push_swap.o differ
diff --git a/builds/stop.o b/builds/stop.o
index dfcc914..d289120 100644
Binary files a/builds/stop.o and b/builds/stop.o differ
diff --git a/correction_pushswap.png b/correction_pushswap.png
new file mode 100644
index 0000000..1fc1f96
Binary files /dev/null and b/correction_pushswap.png differ
diff --git a/includes/push_swap.h b/includes/push_swap.h
index d2b993b..b27230b 100644
--- a/includes/push_swap.h
+++ b/includes/push_swap.h
@@ -34,7 +34,7 @@ t_list		*launch_algo(t_stack **a, t_stack **b, int i);
 void		print_test(t_list *lst, char *s);
 void		ps_usage(void);
 void		ps_error(int i);
-void		ps_stop(t_list *lst, int i);
+void		ps_stop(char **tab, t_list *lst, int i);
 
 /*
 ** algo.c // sort.c
diff --git a/push_swap b/push_swap
index 9a1a1fd..489171c 100755
Binary files a/push_swap and b/push_swap differ
diff --git a/srcs/push_swap.c b/srcs/push_swap.c
index e792059..a328fb3 100644
--- a/srcs/push_swap.c
+++ b/srcs/push_swap.c
@@ -4,18 +4,47 @@ int	is_ordered(t_stack *list)
 {
 	int	cmp;
 
-	cmp = list->n;
-	while (list->next != NULL)
+	while (list && list->next)
 	{
+		cmp = list->n;
 		list = list->next;
-		ft_printf("n:%i cmp:%i\n", cmp, list->n);
 		if (list->n < cmp)
 			return (0);
-		cmp = list->n;
 	}
 	return (1);
 }
 
+int	has_doubles(t_stack *list)
+{
+	t_stack	*head;
+	int		nbr;
+
+	while (list)
+	{
+		head = list;
+		nbr = head->n;
+		while(head && head->next)
+		{
+			head = head->next;
+			if (head->n == nbr)
+				return (1);
+		}
+		list = list->next;
+	}
+	return (0);
+}
+
+int	check_valid(t_stack *list)
+{
+	if (!list)
+		return (0);
+	if (is_ordered(list) == 1)
+		return (0);
+	if (has_doubles(list) == 1)
+		ps_stop(NULL, (t_list *)list, 3);
+	return (1);
+}
+
 int	check_flag(int *ac, char ***av)
 {
 	if (ft_strcmp((*av)[1], "-p") == 0)
@@ -33,21 +62,21 @@ int	check_flag(int *ac, char ***av)
 	return (0);
 }
 
-t_stack	*fill_stack(t_stack *list, char *nb)
+t_stack	*fill_stack(t_stack *list, char *nb, char **tab)
 {
 	t_stack	*new;
 	long	nbl;
 
 	new = ft_calloc(1, sizeof(t_stack));
 	if (!new)
-		ps_stop((t_list *)list, 3);
+		ps_stop(tab, (t_list *)list, 3);
 	new->next = list;
 	list = new;
 	if (ft_isnumber(nb) == 0)
-		ps_stop((t_list *)list, 3);
+		ps_stop(tab, (t_list *)list, 3);
 	nbl = ft_atol(nb);
 	if (nbl < INT_MIN || nbl > INT_MAX)
-		ps_stop((t_list *)list, 3);
+		ps_stop(tab, (t_list *)list, 3);
 	list->n = nbl;
 	list->limit = 0;
 	return (list);
@@ -62,7 +91,7 @@ t_stack	*init_stack(int ac, char **av)
 	list = NULL;
 	if (ac > 2)
 		while (--ac)
-			list = fill_stack(list, av[ac]);
+			list = fill_stack(list, av[ac], av);
 	else if (ac == 2)
 	{
 		split = ft_split(av[1], ' ');
@@ -70,7 +99,7 @@ t_stack	*init_stack(int ac, char **av)
 		while (split[i] != NULL)
 			i++;
 		while (--i >= 0)
-			list = fill_stack(list, split[i]);
+			list = fill_stack(list, split[i], split);
 		ft_free_tab(split);
 	}
 	return (list);
@@ -109,15 +138,17 @@ int	main(int ac, char **av)
 	int			flag;
 
 	if (ac < 2)
-		ps_stop(NULL, 1);
+		ps_stop(NULL, NULL, 1);
 	flag = check_flag(&ac, &av);
 	a = init_stack(ac, av);
 	b = NULL;
-	if (is_ordered(a) == 1)
+	if (check_valid(a) == 1)
 	{
 		solution = launch_algo(&a, &b, flag);
 		print_result(solution, flag);
+		ps_stop(NULL, solution, 0);
 	}
-	ps_stop(solution, 0);
+	else
+		ps_stop(NULL, (t_list *)a, -1);
 	return (0);
 }
diff --git a/srcs/stop.c b/srcs/stop.c
index 2f0b264..404c331 100644
--- a/srcs/stop.c
+++ b/srcs/stop.c
@@ -1,25 +1,18 @@
 #include "push_swap.h"
 
-void	ps_error(int err)
-{
-	if (err == 1)
-		ft_printf("usage :\nlaunch executable : ./push_swap [flag -p] nb nb nb nb nb ...\n");
-	if (err >= 2)
-		ft_putstr_fd("Error\n", 2);
-	exit(0);
-}
-
 /*
 ** if err = 0, the list are freed but the program doesn't stop
 ** if err = 1, 2 or 3, a message is printed and the program stop
-** if err = 3, the parameter list is just a t_stack *list
+** if err = 3 ou -1, the parameter list is just a t_stack *list
 */
-void	ps_stop(t_list *lst, int err)
+void	ps_stop(char **tab, t_list *lst, int err)
 {
 	t_stack	**a;
 	t_stack	**b;
 
-	if (err == 3)
+	if (tab != NULL)
+		ft_free_tab(tab);
+	if (err == 3 || err == -1)
 		ft_lstclear(&lst, NULL);
 	else if (lst)
 	{
@@ -32,5 +25,11 @@ void	ps_stop(t_list *lst, int err)
 		ft_lstclear(&lst, free);
 	}
 	if (err > 0)
-		ps_error(err);
+	{
+		if (err == 1)
+			ft_printf("usage :\nlaunch executable : ./push_swap [flag -p] nb nb nb nb nb ...\n");
+		if (err >= 2)
+			ft_putstr_fd("Error\n", 2);
+		exit(0);
+	}
 }