diff --git a/libc/include/strings.h b/libc/include/strings.h
index e72798b..8f5fec5 100644
--- a/libc/include/strings.h
+++ b/libc/include/strings.h
@@ -43,20 +43,14 @@
 #include <sys/cdefs.h>
 
 __BEGIN_DECLS
-void	 bcopy(const void *, void *, size_t);
-void	 bzero(void *, size_t);
+#define bcopy(b1, b2, len) (void)(memmove((b2), (b1), (len)))
+#define bzero(b, len) (void)(memset((b), '\0', (len)))
+
 int	 ffs(int);
 char	*index(const char *, int);
 int	 strcasecmp(const char *, const char *);
 int	 strncasecmp(const char *, const char *, size_t);
 
-#if defined(__BIONIC_FORTIFY)
-__BIONIC_FORTIFY_INLINE
-void bzero (void *s, size_t n) {
-    __builtin___memset_chk(s, '\0', n, __builtin_object_size (s, 0));
-}
-#endif /* defined(__BIONIC_FORTIFY) */
-
 __END_DECLS
 
 #endif /* !defined(_STRINGS_H_) */