diff --git a/headers/minishell_prototypes.h b/headers/minishell_prototypes.h
index edd3a3b..61f1323 100644
--- a/headers/minishell_prototypes.h
+++ b/headers/minishell_prototypes.h
@@ -6,7 +6,7 @@
 /*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/10/08 02:59:58 by lperrey           #+#    #+#             */
-/*   Updated: 2021/11/29 12:43:15 by lperrey          ###   ########.fr       */
+/*   Updated: 2021/11/30 13:12:04 by lperrey          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -86,6 +86,7 @@ typedef void	*(*t_dup_f)(void *);
 void	*ft_dup_2d_arr(void	*ptr, void *(*dup_func)(void *));
 void	ft_perror_io(char *err_str, char *io_file);
 int		ft_reti_perror_io(int ret, char *err_str, char *io_file);
+void	ft_free_null(void *ptr);
 
 char	**ft_split_quotes(char const *s, char c);
 char	*ft_strdup_quotes(const char *s);
diff --git a/srcs/exec/find_access.c b/srcs/exec/find_access.c
index b86fa9a..cee9fa4 100644
--- a/srcs/exec/find_access.c
+++ b/srcs/exec/find_access.c
@@ -6,7 +6,7 @@
 /*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/11/16 01:57:38 by lperrey           #+#    #+#             */
-/*   Updated: 2021/11/29 12:35:02 by lperrey          ###   ########.fr       */
+/*   Updated: 2021/11/30 13:37:09 by lperrey          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -70,10 +70,7 @@ static int	search_cmd_path(char *cmd_name, char **cmd_path, char *path[])
 		if (access(*cmd_path, X_OK) == 0)
 			break ;
 		else
-		{
-			free(*cmd_path);
-			*cmd_path = NULL; // TODO : free_null()
-		}
+			ft_free_null(cmd_path);
 		i++;
 	}
 	free(cmd_name);
diff --git a/srcs/generic.c b/srcs/generic.c
index d62d0be..ec24122 100644
--- a/srcs/generic.c
+++ b/srcs/generic.c
@@ -6,7 +6,7 @@
 /*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/10/08 09:25:35 by lperrey           #+#    #+#             */
-/*   Updated: 2021/11/27 12:58:20 by lperrey          ###   ########.fr       */
+/*   Updated: 2021/11/30 13:11:48 by lperrey          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -211,3 +211,9 @@ int	ft_reti_perror_io(int ret, char *err_str, char *io_file)
 	perror(io_file);
 	return (ret);
 }
+
+void	ft_free_null(void *ptr)
+{
+	free(*(char**)ptr);
+	*(char**)ptr = NULL;
+}
diff --git a/srcs/parsing/expansions/new_token_for_each_field.c b/srcs/parsing/expansions/new_token_for_each_field.c
index 90db9a9..fa0eca5 100644
--- a/srcs/parsing/expansions/new_token_for_each_field.c
+++ b/srcs/parsing/expansions/new_token_for_each_field.c
@@ -6,7 +6,7 @@
 /*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/11/07 02:01:33 by lperrey           #+#    #+#             */
-/*   Updated: 2021/11/07 04:33:04 by lperrey          ###   ########.fr       */
+/*   Updated: 2021/11/30 13:46:46 by lperrey          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -55,8 +55,7 @@ static t_token	*insert_tokens(t_token *t, t_token *insert_lst)
 	t_token	*insert_lst_last;
 
 	t->id = 0;
-	free(t->content);
-	t->content = NULL; // TODO : free_null()
+	ft_free_null(&t->content);
 	if (!insert_lst)
 		return (t);
 
diff --git a/srcs/shell_loop.c b/srcs/shell_loop.c
index dfeae6b..7356f39 100644
--- a/srcs/shell_loop.c
+++ b/srcs/shell_loop.c
@@ -6,12 +6,14 @@
 /*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/10/04 05:59:26 by lperrey           #+#    #+#             */
-/*   Updated: 2021/11/29 12:43:38 by lperrey          ###   ########.fr       */
+/*   Updated: 2021/11/30 13:30:52 by lperrey          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "minishell.h"
 
+static char	*read_input(char *prompt, t_all *c);
+
 void	shell_loop(t_all *c)
 {
 	char	*line_input;
@@ -21,18 +23,13 @@ void	shell_loop(t_all *c)
 	{
 		if (line_input)
 			free(line_input);
-		c->signal_behaviour.sa_handler = sigint_handler_interactive;
-		sigaction(SIGINT, &c->signal_behaviour, NULL);
-		line_input = readline(c->prompt);
+		line_input = read_input(c->prompt, c);
 		if (line_input && *line_input)
 		{
-			c->signal_behaviour.sa_handler = SIG_IGN;
-			sigaction(SIGINT, &c->signal_behaviour, NULL);
 			add_history(line_input);
 			// Lexing
 			c->token_list = input_to_tokens(line_input);
-			free(line_input);
-			line_input = NULL; // TODO : free_null()
+			ft_free_null(&line_input);
 			if (!c->token_list)
 				continue ;
 			// Parsing
@@ -43,10 +40,24 @@ void	shell_loop(t_all *c)
 			// Exec Pipeline
 			exec_cmd_line(c);
 		}
-		else if (!line_input)
-		{
-			write(1, "exit\n", 5);
-			exit_free(c, get_last_exit_status());
-		}
 	}
 }
+
+static char	*read_input(char *prompt, t_all *c)
+{
+	char				*line_input;
+	struct sigaction	signal_behaviour;
+
+	ft_bzero(&signal_behaviour, sizeof signal_behaviour);
+	signal_behaviour.sa_handler = sigint_handler_interactive;
+	sigaction(SIGINT, &signal_behaviour, NULL);
+	line_input = readline(prompt);
+	signal_behaviour.sa_handler = SIG_IGN;
+	sigaction(SIGINT, &signal_behaviour, NULL);
+	if (!line_input)
+	{
+		write(1, "exit\n", 5);
+		exit_free(c, get_last_exit_status());
+	}
+	return (line_input);
+}