diff --git a/lib/string/memcpy.c b/lib/string/memcpy.c
index 289a4063..623b730e 100644
--- a/lib/string/memcpy.c
+++ b/lib/string/memcpy.c
@@ -21,12 +21,20 @@
 #include <mes/lib.h>
 #include <string.h>
 
-void *
-memcpy (void *dest, void const *src, size_t n)
+char *
+_memcpy (char *dest, char const *src, size_t n)
 {
   char *p = dest;
   char const *q = src;
+
   while (n--)
     *p++ = *q++;
+
   return dest;
 }
+
+void *
+memcpy (void *dest, void const *src, size_t n)
+{
+  return _memcpy (dest, src, n);
+}