diff --git a/ft_memcpy.c b/ft_memcpy.c
index 691e1ec..c6aa148 100644
--- a/ft_memcpy.c
+++ b/ft_memcpy.c
@@ -6,7 +6,7 @@
 /*   By: apommier <apommier@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2020/11/29 00:12:03 by apommier          #+#    #+#             */
-/*   Updated: 2020/12/13 21:03:38 by apommier         ###   ########.fr       */
+/*   Updated: 2020/12/13 21:09:28 by apommier         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,6 +18,8 @@ void	*ft_memcpy(void *dest, const void *src, size_t n)
 	char		*p;
 	const char	*p1;
 
+	if (!dest || !src || !n)
+		return (dest);
 	p = (char*)dest;
 	p1 = (const char*)src;
 
diff --git a/ft_memmove.c b/ft_memmove.c
index 2ad0ee6..86f5d8e 100644
--- a/ft_memmove.c
+++ b/ft_memmove.c
@@ -6,7 +6,7 @@
 /*   By: apommier <apommier@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2020/11/29 00:12:14 by apommier          #+#    #+#             */
-/*   Updated: 2020/12/13 21:04:37 by apommier         ###   ########.fr       */
+/*   Updated: 2020/12/13 21:10:58 by apommier         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -17,6 +17,8 @@ void	*ft_memmove(void *dest, const void *src, size_t n)
 	size_t i;
 
 	i = 0;
+	if (!dest || !src || !n)
+		return (dest);
 	if (dest > src)
 	{
 		while (n)