diff --git a/libft/Makefile b/libft/Makefile
index 98af795..5f20462 100644
--- a/libft/Makefile
+++ b/libft/Makefile
@@ -6,7 +6,7 @@
 #    By: gbaconni <gbaconni@42lausanne.ch>          +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2021/10/22 09:10:00 by gbaconni          #+#    #+#              #
-#    Updated: 2021/10/22 11:34:33 by gbaconni         ###   ########.fr        #
+#    Updated: 2021/10/22 11:12:29 by gbaconni         ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 #
@@ -43,8 +43,8 @@ a: update compile
 	@./$(OUT) || true
 
 b: compile
-	@grep -q 'update message' libftTester/Makefile && sed -i '' -r 's/update (message)/\1/g' libftTester/Makefile || true
-	@grep -q '/libft$$' libftTester/Makefile || sed -i '' -r 's/^(PARENT_DIR.*)/\1\/libft/' libftTester/Makefile || true
+	@grep -q 'update message' libftTester/Makefile && sed -i'' -r 's/update (message)/\1/g' libftTester/Makefile || true
+	@grep -q '/libft$$' libftTester/Makefile || sed -i'' -r 's/^(PARENT_DIR.*)/\1\/libft/' libftTester/Makefile || true
 	@make -C libftTester m || true
 	@make -C libftTester b || true
 
diff --git a/libft/README.md b/libft/README.md
index 5b1e684..1f95d17 100644
--- a/libft/README.md
+++ b/libft/README.md
@@ -16,6 +16,11 @@ ln -snf ../../42/libft/git libft
 ln -snf ../libft libft
 ```
 
+Only for Linux
+```
+sudo apt-get install -qq -y make gcc clang valgrind
+```
+
 ## Update
 
 ```