diff --git a/libc/include/netdb.h b/libc/include/netdb.h
index c2e08ea..9491364 100644
--- a/libc/include/netdb.h
+++ b/libc/include/netdb.h
@@ -209,8 +209,8 @@
 void endprotoent(void);
 void endservent(void);
 void freehostent(struct hostent *);
-struct hostent	*gethostbyaddr(const char *, int, int);
-int gethostbyaddr_r(const char *, int, int, struct hostent *, char *, size_t, struct hostent **, int *);
+struct hostent	*gethostbyaddr(const void *, int, int);
+int gethostbyaddr_r(const void *, int, int, struct hostent *, char *, size_t, struct hostent **, int *);
 struct hostent	*gethostbyname(const char *);
 int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
 struct hostent	*gethostbyname2(const char *, int);