diff --git a/srcd/part1/ft_memmove.c b/srcd/part1/ft_memmove.c
index 5ff017c..035b345 100644
--- a/srcd/part1/ft_memmove.c
+++ b/srcd/part1/ft_memmove.c
@@ -6,7 +6,7 @@
 /*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/11/25 13:56:25 by hulamy            #+#    #+#             */
-/*   Updated: 2019/11/25 13:56:29 by hulamy           ###   ########.fr       */
+/*   Updated: 2019/11/28 15:04:39 by hulamy           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,22 +14,55 @@
 ** copy n characters from src to dst in a non destructive way and return dst
 */
 
+/*
+**	#include <libc.h>
+**
+**	size_t		ft_strlen(const char *str)
+**	{
+**		size_t i;
+**
+**		i = 0;
+**		while (str[i])
+**			i++;
+**		return (i);
+**	}
+**
+**	void	*ft_memmove(void *dst, const void *src, size_t len);
+**
+**	//int		main(int ac, char **av)
+**	int		main(void)
+**	{
+**		char *src = "this is a good nyancat !\r\n";
+**		char dst[0xF0];
+**		int  size = strlen(src);
+**
+**	//	if (ac == 4)
+**	//		printf("%s\n", ft_memmove(av[1], av[2], atoi(av[3])));
+**
+**		ft_memmove(dst, src, size);
+**		printf("%s", dst);
+**		return (0);
+**	}
+*/
+
 #include "libft.h"
 
 void	*ft_memmove(void *dst, const void *src, size_t len)
 {
-	int		i;
-	char	*source;
-	char	*dest;
+	size_t	i;
+	char	*cpsrc;
+	char	*cpdst;
 
 	i = -1;
-	source = (char *)src;
-	dest = (char *)dst;
-	if (source < dest)
-		while ((int)(--len) >= 0)
-			dest[len] = source[len];
+	cpsrc = (char *)src;
+	cpdst = (char *)dst;
+	if (dst == src)
+		return (dst);
+	if (cpsrc < cpdst)
+		while (len--)
+			cpdst[len] = cpsrc[len];
 	else
-		while (++i < (int)len)
-			dest[i] = source[i];
+		while (++i < len)
+			cpdst[i] = cpsrc[i];
 	return (dst);
 }
diff --git a/srcs/ft_memmove.c b/srcs/ft_memmove.c
index 5ff017c..3ac3db6 100644
--- a/srcs/ft_memmove.c
+++ b/srcs/ft_memmove.c
@@ -6,7 +6,7 @@
 /*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/11/25 13:56:25 by hulamy            #+#    #+#             */
-/*   Updated: 2019/11/25 13:56:29 by hulamy           ###   ########.fr       */
+/*   Updated: 2019/11/28 14:57:58 by hulamy           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,18 +18,20 @@
 
 void	*ft_memmove(void *dst, const void *src, size_t len)
 {
-	int		i;
-	char	*source;
-	char	*dest;
+	size_t	i;
+	char	*cpsrc;
+	char	*cpdst;
 
 	i = -1;
-	source = (char *)src;
-	dest = (char *)dst;
-	if (source < dest)
-		while ((int)(--len) >= 0)
-			dest[len] = source[len];
+	cpsrc = (char *)src;
+	cpdst = (char *)dst;
+	if (dst == src)
+		return (dst);
+	if (cpsrc < cpdst)
+		while (len--)
+			cpdst[len] = cpsrc[len];
 	else
-		while (++i < (int)len)
-			dest[i] = source[i];
+		while (++i < len)
+			cpdst[i] = cpsrc[i];
 	return (dst);
 }