diff --git a/libc/include/sys/wait.h b/libc/include/sys/wait.h
index 573e22004..b30b7ec9e 100644
--- a/libc/include/sys/wait.h
+++ b/libc/include/sys/wait.h
@@ -56,7 +56,7 @@ extern pid_t  wait4(pid_t, int *, int, struct rusage *);
  */
 typedef int idtype_t;
 
-extern int  waidit(idtype_t which, id_t id, siginfo_t *info, int options);
+extern int  waitid(idtype_t which, id_t id, siginfo_t *info, int options);
 
 __END_DECLS