diff --git a/Makefile b/Makefile
index 8d237cd..6448337 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@
 #    By: vtarasiu <marvin@42.fr>                    +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2018/03/24 10:11:17 by vtarasiu          #+#    #+#              #
-#    Updated: 2019/05/14 20:42:19 by vtarasiu         ###   ########.fr        #
+#    Updated: 2019/05/16 13:05:03 by vtarasiu         ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
@@ -16,12 +16,10 @@ CC = clang
 
 FDS = shell(ulimit -n)
 
-FLAGS = -g -DSH=\"$(NAME)\" \
+FLAGS = -DSH=\"$(NAME)\" \
                -Wall  \
                -Wextra \
-               -Werror  \
-               #-fprofile-instr-generate \
-               #-fsanitize="address"
+               -Werror
 
 HEADER = -I include/ -I printf/include -I libft/
 SRC_DIR = ./src/
diff --git a/include/twenty_one_sh.h b/include/twenty_one_sh.h
index f3b9f2d..3c4aabb 100644
--- a/include/twenty_one_sh.h
+++ b/include/twenty_one_sh.h
@@ -6,7 +6,7 @@
 /*   By: vtarasiu <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2018/12/07 18:12:03 by vtarasiu          #+#    #+#             */
-/*   Updated: 2019/05/15 13:29:08 by vtarasiu         ###   ########.fr       */
+/*   Updated: 2019/05/16 13:05:17 by vtarasiu         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -70,8 +70,8 @@
 # define ERR_RUNNING_JOBS       ANSI_RESET SH ": you have running jobs\n"
 # define ERR_AMBIGUOUS_REDIRECT ANSI_RESET SH ": ambiguous redirect\n"
 
-# define BUILD 2424
-# define BUILD_DATE "15.05.19 13:29:08 EEST"
+# define BUILD 2459
+# define BUILD_DATE "16.05.19 13:05:16 EEST"
 
 # ifdef MAX_INPUT
 #  undef MAX_INPUT
diff --git a/src/ast/exec_pipeline.c b/src/ast/exec_pipeline.c
index 48ad12b..b1403e4 100644
--- a/src/ast/exec_pipeline.c
+++ b/src/ast/exec_pipeline.c
@@ -47,6 +47,12 @@ static int			exec_pipeline_inner(const t_node *node,
 	int			pp[2];
 	t_context	*context_left;
 
+	if (node->left->node_type == NODE_SUBSHELL ||
+		node->right->node_type == NODE_SUBSHELL)
+	{
+		ft_dprintf(2, SH ": subshells inside pipes are illegal\n");
+		return (127);
+	}
 	if (node->left->node_type == NODE_COMMAND &&
 		node->right->node_type == NODE_COMMAND)
 		return (exec_pipeline_terminator(node, context_right));
diff --git a/src/ast/syntax_rules.c b/src/ast/syntax_rules.c
index 271537d..d0f56ff 100644
--- a/src/ast/syntax_rules.c
+++ b/src/ast/syntax_rules.c
@@ -6,7 +6,7 @@
 /*   By: vtarasiu <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2018/12/03 16:28:37 by vtarasiu          #+#    #+#             */
-/*   Updated: 2019/05/14 17:30:00 by vtarasiu         ###   ########.fr       */
+/*   Updated: 2019/05/15 19:32:02 by vtarasiu         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -154,7 +154,7 @@ const t_rule g_compound_command = {
 const t_rule g_subshell = {
 	.token = TOKEN_NOT_APPLICABLE,
 	.expands_to = {
-		{&g_lbracket_token, &g_compound_list, &g_rbracket_token}
+		{&g_lbracket_token, &g_list, &g_rbracket_token}
 	},
 	.human_readable = "subshell",
 	.tree_builder = &subshell_build
@@ -358,7 +358,7 @@ const t_rule g_term_rule_dash = {
 const t_rule g_brace_group = {
 	.token = TOKEN_NOT_APPLICABLE,
 	.expands_to = {
-		{&g_lbrace_token, &g_compound_list, &g_rbrace_token}
+		{&g_lbrace_token, &g_list, &g_rbrace_token}
 	},
 	.human_readable = "brace_group",
 	.tree_builder = NULL
diff --git a/src/ast/tree_pipe_sequence.c b/src/ast/tree_pipe_sequence.c
index f30546e..132ece6 100644
--- a/src/ast/tree_pipe_sequence.c
+++ b/src/ast/tree_pipe_sequence.c
@@ -6,7 +6,7 @@
 /*   By: vtarasiu <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/03/02 13:13:27 by vtarasiu          #+#    #+#             */
-/*   Updated: 2019/03/04 18:48:57 by vtarasiu         ###   ########.fr       */
+/*   Updated: 2019/05/15 17:02:58 by vtarasiu         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/src/ast/tree_subshell.c b/src/ast/tree_subshell.c
index b611f06..58da412 100644
--- a/src/ast/tree_subshell.c
+++ b/src/ast/tree_subshell.c
@@ -6,7 +6,7 @@
 /*   By: vtarasiu <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/03/03 18:08:28 by vtarasiu          #+#    #+#             */
-/*   Updated: 2019/03/04 18:48:56 by vtarasiu         ###   ########.fr       */
+/*   Updated: 2019/05/15 17:45:48 by vtarasiu         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/src/expansions/expand_vars.c b/src/expansions/expand_vars.c
index 8e5365e..1dbdc4e 100644
--- a/src/expansions/expand_vars.c
+++ b/src/expansions/expand_vars.c
@@ -86,7 +86,7 @@ char			*expand_vars(char *str)
 	while (i < len)
 	{
 		ignore = check_ignore(str, i, ignore);
-		if (ignore != QUOTE && str[i] == '$' && i + 1 != len && 
+		if (ignore != QUOTE && str[i] == '$' && i + 1 != len &&
 			ft_isascii(str[i + 1]))
 		{
 			swap = str;