diff --git a/bonus/checker_bonus.c b/bonus/checker_bonus.c
index 67b54a6..8c5fdbe 100644
--- a/bonus/checker_bonus.c
+++ b/bonus/checker_bonus.c
@@ -18,27 +18,27 @@
 
 static int	apply_operation(t_stacks *stacks, char buf[1024])
 {
-	if (!ft_strncmp("sa", buf, ft_strlen(buf)))
+	if (ft_strncmp("sa\n", buf, ft_strlen(buf)))
 		return (sa(stacks), 1);
-	if (!ft_strncmp("sb", buf, ft_strlen(buf)))
+	if (ft_strncmp("sb\n", buf, ft_strlen(buf)))
 		return (sb(stacks), 1);
-	if (!ft_strncmp("ss", buf, ft_strlen(buf)))
+	if (ft_strncmp("ss\n", buf, ft_strlen(buf)))
 		return (ss(stacks), 1);
-	if (!ft_strncmp("pa", buf, ft_strlen(buf)))
+	if (ft_strncmp("pa\n", buf, ft_strlen(buf)))
 		return (pa(stacks), 1);
-	if (!ft_strncmp("pb", buf, ft_strlen(buf)))
+	if (ft_strncmp("pb\n", buf, ft_strlen(buf)))
 		return (pb(stacks), 1);
-	if (!ft_strncmp("ra", buf, ft_strlen(buf)))
+	if (ft_strncmp("ra\n", buf, ft_strlen(buf)))
 		return (ra(stacks), 1);
-	if (!ft_strncmp("rb", buf, ft_strlen(buf)))
+	if (ft_strncmp("rb\n", buf, ft_strlen(buf)))
 		return (rb(stacks), 1);
-	if (!ft_strncmp("rr", buf, ft_strlen(buf)))
+	if (ft_strncmp("rr\n", buf, ft_strlen(buf)))
 		return (rr(stacks), 1);
-	if (!ft_strncmp("rra", buf, ft_strlen(buf)))
+	if (ft_strncmp("rra\n", buf, ft_strlen(buf)))
 		return (rra(stacks), 1);
-	if (!ft_strncmp("rrb", buf, ft_strlen(buf)))
+	if (ft_strncmp("rrb\n", buf, ft_strlen(buf)))
 		return (rrb(stacks), 1);
-	if (!ft_strncmp("rrr", buf, ft_strlen(buf)))
+	if (ft_strncmp("rrr\n", buf, ft_strlen(buf)))
 		return (rrr(stacks), 1);
 	return (0);
 }
@@ -63,10 +63,10 @@ static int	tester(t_stacks *stacks)
 		buf = get_next_line(0);
 	}
 	if (!is_stacks_b_empty(stacks))
-		return (write(1, "KO\n", 3));
+		return (secure_write(1, "KO\n", 3));
 	if (!check_order(stacks->a))
-		return (write(1, "KO\n", 3));
-	write(1, "OK\n", 3);
+		return (secure_write(1, "KO\n", 3));
+	secure_write(1, "OK\n", 3);
 	return (0);
 }
 
@@ -96,7 +96,7 @@ int	main(int argc, char **argv)
 	if (!tab)
 		return (0);
 	if (!check_error_bonus(tab))
-		write(2, "Error\n", 7);
+		secure_write(2, "Error\n", 7);
 	else
 		bonus(tab);
 	free_tab(tab);
diff --git a/stack_utils/push.c b/stack_utils/push.c
index 763cd72..1946801 100644
--- a/stack_utils/push.c
+++ b/stack_utils/push.c
@@ -32,7 +32,7 @@ void	pa(t_stacks *stacks)
 	stack_add_front(&(stacks->a), b_push);
 	stacks->pa++;
 	if (stacks->print)
-		write(1, "pa\n", 3);
+		secure_write(1, "pa\n", 3);
 }
 
 void	pb(t_stacks *stacks)
@@ -53,5 +53,5 @@ void	pb(t_stacks *stacks)
 	stack_add_front(&(stacks->b), a_push);
 	stacks->pb++;
 	if (stacks->print)
-		write(1, "pb\n", 3);
+		secure_write(1, "pb\n", 3);
 }
diff --git a/stack_utils/rev_rotate.c b/stack_utils/rev_rotate.c
index 135bf22..9915462 100644
--- a/stack_utils/rev_rotate.c
+++ b/stack_utils/rev_rotate.c
@@ -18,7 +18,7 @@ void	rra(t_stacks *stacks)
 	if (stacks && stacks->a && stacks->a->previous)
 		stacks->a = stacks->a->previous;
 	stacks->rra++;
-	write(1, "rra\n", 4);
+	secure_write(1, "rra\n", 4);
 }
 
 void	rrb(t_stacks *stacks)
@@ -27,7 +27,7 @@ void	rrb(t_stacks *stacks)
 		stacks->b = stacks->b->previous;
 	stacks->rrb++;
 	if (stacks->print)
-		write(1, "rrb\n", 4);
+		secure_write(1, "rrb\n", 4);
 }
 
 void	rrr(t_stacks *stacks)
@@ -38,5 +38,5 @@ void	rrr(t_stacks *stacks)
 		stacks->a = stacks->a->previous;
 	stacks->rrr++;
 	if (stacks->print)
-		write(1, "rrr\n", 4);
+		secure_write(1, "rrr\n", 4);
 }
diff --git a/stack_utils/rotate.c b/stack_utils/rotate.c
index 922a56c..2d0102d 100644
--- a/stack_utils/rotate.c
+++ b/stack_utils/rotate.c
@@ -19,7 +19,7 @@ void	ra(t_stacks *stacks)
 		stacks->a = stacks->a->next;
 	stacks->ra++;
 	if (stacks->print)
-		write(1, "ra\n", 3);
+		secure_write(1, "ra\n", 3);
 }
 
 void	rb(t_stacks *stacks)
@@ -28,7 +28,7 @@ void	rb(t_stacks *stacks)
 		stacks->b = stacks->b->next;
 	stacks->rb++;
 	if (stacks->print)
-		write(1, "rb\n", 3);
+		secure_write(1, "rb\n", 3);
 }
 
 void	rr(t_stacks *stacks)
@@ -39,5 +39,5 @@ void	rr(t_stacks *stacks)
 		stacks->b = stacks->b->next;
 	stacks->rr++;
 	if (stacks->print)
-		write(1, "rr\n", 3);
+		secure_write(1, "rr\n", 3);
 }
diff --git a/stack_utils/swap.c b/stack_utils/swap.c
index c37c468..98a9135 100644
--- a/stack_utils/swap.c
+++ b/stack_utils/swap.c
@@ -26,7 +26,7 @@ void	sa(t_stacks *stacks)
 	a->next->value = stock;
 	stacks->sa++;
 	if (stacks->print)
-		write(1, "sa\n", 3);
+		secure_write(1, "sa\n", 3);
 }
 
 void	sb(t_stacks *stacks)
@@ -42,7 +42,7 @@ void	sb(t_stacks *stacks)
 	b->next->value = stock;
 	stacks->sb++;
 	if (stacks->print)
-		write(1, "sb\n", 3);
+		secure_write(1, "sb\n", 3);
 }
 
 void	ss(t_stacks *stacks)
@@ -69,5 +69,5 @@ void	ss(t_stacks *stacks)
 	}
 	stacks->ss++;
 	if (stacks->print)
-		write(1, "ss\n", 3);
+		secure_write(1, "ss\n", 3);
 }