diff --git a/core/hash/md5.c b/core/hash/md5.c
index 794eb59..58d0ae2 100644
--- a/core/hash/md5.c
+++ b/core/hash/md5.c
@@ -4,10 +4,10 @@
 #include "hash.h"
 
 #include <fx/core/hash.h>
-#include <memory.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #define F(x, y, z)        (z ^ (x & (y ^ z)))
 #define G(x, y, z)        (y ^ (z & (x ^ y)))