diff --git a/sys/compat/freebsd32/syscalls.master b/sys/compat/freebsd32/syscalls.master
index bbd39de542be..22a304658d1d 100644
--- a/sys/compat/freebsd32/syscalls.master
+++ b/sys/compat/freebsd32/syscalls.master
@@ -794,3 +794,4 @@
 				    u_int32_t lengthlo, u_int32_t lengthhi); }
 480	AUE_FTRUNCATE	STD	{ int freebsd32_ftruncate(int fd, \
 				    u_int32_t lengthlo, u_int32_t lengthhi); }
+481	AUE_KILL	NOPROTO	{ int thr_kill2(pid_t pid, long id, int sig); }