diff --git a/ex07/ft_putnbr.c b/ex07/ft_putnbr.c
index ed18db4..887b499 100644
--- a/ex07/ft_putnbr.c
+++ b/ex07/ft_putnbr.c
@@ -26,7 +26,7 @@ void	ft_putnbr(int nb)
 		}
 		nb *= -1;
 	}
-	last_digit = nb % 10 + 0x30;
+	last_digit = nb % 10 + '0';
 	if (nb > 9)
 	{
 		nb /= 10;
diff --git a/ex08/ft_print_combn.c b/ex08/ft_print_combn.c
index a53d302..e659d72 100644
--- a/ex08/ft_print_combn.c
+++ b/ex08/ft_print_combn.c
@@ -23,7 +23,7 @@ void	generate_outputs(char *output, int output_len, int max_len)
 	if (output_len == max_len)
 	{
 		write(1, output, output_len);
-		if (output[0] != 10 - max_len + 0x30)
+		if (output[0] != 10 - max_len + '0')
 			write(1, ", ", 2);
 		return ;
 	}