diff --git a/sys/kern/Makefile b/sys/kern/Makefile
index 1ea154dab8f..2ab42c14078 100644
--- a/sys/kern/Makefile
+++ b/sys/kern/Makefile
@@ -11,10 +11,11 @@ all:
 sysent:  init_sysent.c syscalls.c ../sys/syscall.h ../sys/syscall.mk \
 ../sys/sysproto.h
 
-init_sysent.c syscalls.c ../sys/syscall.h \
+init_sysent.c syscalls.c systrace_args.c ../sys/syscall.h \
 ../sys/syscall.mk ../sys/sysproto.h: makesyscalls.sh syscalls.master
 	-mv -f init_sysent.c init_sysent.c.bak
 	-mv -f syscalls.c syscalls.c.bak
+	-mv -f systrace_args.c systrace_args.c.bak
 	-mv -f ../sys/syscall.h ../sys/syscall.h.bak
 	-mv -f ../sys/syscall.mk ../sys/syscall.mk.bak
 	-mv -f ../sys/sysproto.h ../sys/sysproto.h.bak