diff --git a/sys/sys/unistd.h b/sys/sys/unistd.h
index 83b60d61b9b..e3b562f14f3 100644
--- a/sys/sys/unistd.h
+++ b/sys/sys/unistd.h
@@ -220,7 +220,7 @@
 #define RFSTOPPED	(1<<17)	/* leave child in a stopped state */
 #define	RFHIGHPID	(1<<18) /* use a pid higher then 10 (idleproc) */
 #define RFPPWAIT	(1<<31) /* parent sleeps until child exits (vfork) */
-#define RFKERNELONLY	RFSTOPPED
+#define RFKERNELONLY	(RFSTOPPED|RFHIGHPID)
 
 #endif /* !_POSIX_SOURCE */