diff --git a/ft_atoi.c b/ft_atoi.c
index d1985cc..9e08b71 100644
--- a/ft_atoi.c
+++ b/ft_atoi.c
@@ -6,7 +6,7 @@
 /*   By: tmaze <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2018/04/05 13:50:22 by tmaze             #+#    #+#             */
-/*   Updated: 2018/04/05 14:24:13 by tmaze            ###   ########.fr       */
+/*   Updated: 2018/04/09 10:04:51 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -24,12 +24,12 @@ int		ft_atoi(const char *str)
 		nbnum++;
 	if (str[nbnum] == '+' || str[nbnum] == '-')
 		nbnum++;
-	while (str[nbnum] != '\0' && str[nbnum] >= '0' && str[nbnum] <= '9')
+	while (str[nbnum] != '\0' && ft_isdigit(str[nbnum]))
 		nbnum++;
 	nbnum--;
 	ret = 0;
 	mult = 1;
-	while (nbnum >= 0 && (str[nbnum] >= '0' && str[nbnum] <= '9'))
+	while (nbnum >= 0 && ft_isdigit(str[nbnum]))
 	{
 		ret += (str[nbnum--] - '0') * mult;
 		mult *= 10;