diff --git a/srcs/part2/ft_strmapi.c b/srcs/part2/ft_strmapi.c
index eac69ee..7fa1a06 100644
--- a/srcs/part2/ft_strmapi.c
+++ b/srcs/part2/ft_strmapi.c
@@ -29,7 +29,7 @@
 **	}
 **	char	touppercase(unsigned int i, char c)
 **	{
-**		if (i < 3)
+**		if (i < 3 && c >= 'a' && c <= 'z')
 **			c -= 32;
 **		return (c);
 **	}
diff --git a/srcs/part2/main.c b/srcs/part2/main.c
index a9e78bd..a30a8db 100644
--- a/srcs/part2/main.c
+++ b/srcs/part2/main.c
@@ -4,7 +4,7 @@
 
 char	touppercase(unsigned int i, char c)
 {
-	if (i < 3 && 'a' <= c <= 'z')
+	if (i < 3 && c >= 'a' && c <= 'z')
 		c -= 32;
 	return (c);
 }
@@ -20,7 +20,7 @@ void	print_ft_split(char *str, char c)
 
 	printf("split  : [%s] [%c] -> ", str, c);
 	tab = ft_split(str, c);
-	while (*tab != NULL)
+	while (tab && *tab != NULL)
 		printf("[%s]", *(tab++));
 	printf("\n");
 }
@@ -65,8 +65,10 @@ int main()
 	printf("\n");
 
 	print_ft_split(" dfs zfe f ez f fez  ", ' ');
-//	print_ft_split(NULL, 0);
+	print_ft_split(NULL, ' ');
+	print_ft_split(NULL, 0);
 	print_ft_split("", 0);
+	print_ft_split("vzevzev fze", 0);
 	print_ft_split(" ", 0);
 	print_ft_split("", ' ');
 	print_ft_split(" ", ' ');