diff --git a/includes/minishell.h b/includes/minishell.h
index 73f4fbd..695abd1 100644
--- a/includes/minishell.h
+++ b/includes/minishell.h
@@ -13,7 +13,7 @@
 #ifndef MINISHELL_H
 # define MINISHELL_H
 
-# define DEBUG 1
+# define DEBUG 0
 
 typedef struct s_ast_n t_ast_n;
 typedef struct s_node t_node;
diff --git a/includes/parser/ast.h b/includes/parser/ast.h
index a949eaf..fb83308 100644
--- a/includes/parser/ast.h
+++ b/includes/parser/ast.h
@@ -80,4 +80,7 @@ void		create_pline(t_ast_n *self, t_node *lst, t_node *token, t_msh *msh);
 // and_or
 void		create_and_or(t_ast_n *parrent, t_node *lst, t_node *token, t_msh *msh);
 
+// free
+void		free_ast(t_ast_n *node);
+
 #endif
diff --git a/lib/libft/srcs/format/add_to_tab.c b/lib/libft/srcs/format/add_to_tab.c
index 9fa1622..ddabff0 100644
--- a/lib/libft/srcs/format/add_to_tab.c
+++ b/lib/libft/srcs/format/add_to_tab.c
@@ -43,12 +43,10 @@ static char	**add_space_to_tab(char **tab, int count)
 
 void	add_to_tab(char ***tab, char *str)
 {
-	char	**tmp;
 	int		i;
 
 	if (!str)
 		return ;
-	tmp = *tab;
 	i = 0;
 	if (*tab)
 	{
@@ -60,8 +58,6 @@ void	add_to_tab(char ***tab, char *str)
 	{
 		*tab = malloc(sizeof(char *) * 2);
 	}
-	if (tmp)
-		free(tmp);
 	(*tab)[i] = ft_strdup(str);
 	(*tab)[i + 1] = NULL;
 }
diff --git a/srcs/main.c b/srcs/main.c
index 94500ba..2dce29a 100644
--- a/srcs/main.c
+++ b/srcs/main.c
@@ -73,6 +73,8 @@ void	interpret_cmd(char **input, t_msh *msh)
 {
 	msh->head = parser(*input, msh);
 	msh->ex_code = execute_command(msh->head);
+	free_ast(msh->head);
+	msh->head = NULL;
 	free(*input);
 	*input = NULL;
 }
diff --git a/srcs/parsing/ast/free_ast.c b/srcs/parsing/ast/free_ast.c
new file mode 100644
index 0000000..2039652
--- /dev/null
+++ b/srcs/parsing/ast/free_ast.c
@@ -0,0 +1,50 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   free_ast.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: nalebrun <nalebrun@student.s19.be>        +#+  +:+       +#+         */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/02/05 14:39:28 by nalebrun          #+#    #+#             */
+/*   Updated: 2025/02/05 14:39:28 by nalebrun         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../../../includes/minishell.h"
+
+static void	free_redirs(t_ast_n *node)
+{
+	free(node->redir);
+	if (node->files)
+		free_tab(node->files);
+	free_tab(node->args);
+}
+
+void	free_ast(t_ast_n *node)
+{
+	int i;
+
+	if (node->state == _AND || node->state == _OR)
+	{
+		free_ast(node->left);
+		free_ast(node->right);
+	}
+	else if (node->state == _PLINE)
+	{
+		i = -1;
+		while (node->pline[++i])
+			free_ast(node->pline[i]);
+	}
+	else if (node->state == _SUBSH)
+	{
+		free_ast(node->left);
+		free_redirs(node);
+	}
+	else
+	{
+		free(node->cmd);
+		free_redirs(node);
+	}
+
+	free(node);
+}
diff --git a/srcs/parsing/ast/subsh.c b/srcs/parsing/ast/subsh.c
index f4abed5..7a201b2 100644
--- a/srcs/parsing/ast/subsh.c
+++ b/srcs/parsing/ast/subsh.c
@@ -46,4 +46,5 @@ void create_subsh(t_ast_n *self, t_node *lst, t_msh *msh)
 	self->redir = ft_calloc(1, sizeof(t_redir));
 	self->redir[0] = _NR; 
 	create_redir_subsh(lst, self);
+	// free(cutted);
 }