diff --git a/include/sys/wait.h b/include/sys/wait.h
index 7b5e8c7b165f00ed41b586619a1b7dfc9bf0c373..b8d6432ec4045172c1b623d37e1d68b548c342f5 100644
--- a/include/sys/wait.h
+++ b/include/sys/wait.h
@@ -33,6 +33,10 @@ pid_t wait4 (pid_t, int *, int, struct rusage *);
 #define WCONTINUED 8
 #define WNOWAIT    0x1000000
 
+#define __WNOTHREAD 0x20000000
+#define __WALL      0x40000000
+#define __WCLONE    0x80000000
+
 #define P_ALL  0
 #define P_PID  1
 #define P_PGID 2