diff --git a/sys/conf/files.amd64 b/sys/conf/files.amd64
--- a/sys/conf/files.amd64
+++ b/sys/conf/files.amd64
@@ -82,6 +82,7 @@
 	compile-with "${NORMAL_S} -g0" \
 	no-ctfconvert
 amd64/amd64/machdep.c		standard
+	dependency      "elf-vdso.so.o"
 amd64/amd64/mem.c		optional	mem
 amd64/amd64/minidump_machdep.c	standard
 amd64/amd64/mp_machdep.c	optional	smp