diff --git a/philo/log.c b/philo/log.c
index 2395e87..6214505 100644
--- a/philo/log.c
+++ b/philo/log.c
@@ -6,7 +6,7 @@
 /*   By: adjoly <adjoly@student.42angouleme.fr>     +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/07/07 16:12:20 by adjoly            #+#    #+#             */
-/*   Updated: 2024/08/12 19:38:58 by adjoly           ###   ########.fr       */
+/*   Updated: 2024/08/13 10:22:30 by adjoly           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -28,6 +28,8 @@ bool	print_err(uint8_t error)
 		printf(ERR_MAX_MEAL);
 	else if (error == 5)
 		printf(ERR_NB_ARG);
+	else if (error == 6)
+		printf(ERR_ARG);
 	return (true);
 }
 
diff --git a/philo/parsing.c b/philo/parsing.c
index 00875be..99355dc 100644
--- a/philo/parsing.c
+++ b/philo/parsing.c
@@ -6,7 +6,7 @@
 /*   By: adjoly <adjoly@student.42angouleme.fr>     +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/07/08 15:30:46 by adjoly            #+#    #+#             */
-/*   Updated: 2024/08/12 19:39:43 by adjoly           ###   ########.fr       */
+/*   Updated: 2024/08/13 10:32:25 by adjoly           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,6 +14,7 @@
 #include "philo_msg.h"
 
 bool	print_err(uint8_t error);
+bool	check_args(char **av);
 
 bool	check_av(char **av)
 {
@@ -85,5 +86,7 @@ t_pdata	philo_parse(char **av, int ac)
 	data.philo_nbr = 0;
 	if (!(ac > 4 && ac <= 6))
 		return (ret_err(data, 5));
+	if (check_args(av))
+		return (ret_err(data, 6));
 	return (fill_pdata(av));
 }
diff --git a/philo/parsing2.c b/philo/parsing2.c
new file mode 100644
index 0000000..cddfe82
--- /dev/null
+++ b/philo/parsing2.c
@@ -0,0 +1,38 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   parsing2.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42angouleme.fr>     +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/08/13 10:25:34 by adjoly            #+#    #+#             */
+/*   Updated: 2024/08/13 10:33:07 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "philo.h"
+
+int	ft_isdigit(int c)
+{
+	return (c >= '0' && c <= '9');
+}
+
+bool	check_args(char **av)
+{
+	char	**tmp;
+	char	*a;
+
+	tmp = av;
+	while (*tmp)
+	{
+		a = *tmp;
+		while (*a)
+		{
+			if (!ft_isdigit(*a))
+				return (true);
+			a++;
+		}
+		tmp++;
+	}
+	return (false);
+}
diff --git a/philo/philo_msg.h b/philo/philo_msg.h
index 3b52cd8..fa53ca7 100644
--- a/philo/philo_msg.h
+++ b/philo/philo_msg.h
@@ -6,7 +6,7 @@
 /*   By: adjoly <adjoly@student.42angouleme.fr>     +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/07/07 17:50:46 by adjoly            #+#    #+#             */
-/*   Updated: 2024/08/12 17:32:08 by adjoly           ###   ########.fr       */
+/*   Updated: 2024/08/13 10:19:13 by adjoly           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -25,5 +25,6 @@
 # define ERR_MAX_SLEEP_TIME "Time to sleep too long < INT_MAX\n" // err 3
 # define ERR_MAX_MEAL "Too much meal < 1000\n" // err 4
 # define ERR_NB_ARG "Invalid number of args need to be 4 or 5\n" // err 5
+# define ERR_ARG "Invalid argument\n"
 
 #endif