diff --git a/sys/conf/vdso_amd64.ldscript b/sys/conf/vdso_amd64.ldscript
--- a/sys/conf/vdso_amd64.ldscript
+++ b/sys/conf/vdso_amd64.ldscript
@@ -32,6 +32,9 @@
  * Linker script for amd64 vdso.
  */
 
+OUTPUT_ARCH(i386:x86-64)
+TARGET(elf64-x86-64-freebsd)
+
 PHDRS
 {
 	text		PT_LOAD		FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
diff --git a/sys/conf/vdso_amd64_ia32.ldscript b/sys/conf/vdso_amd64_ia32.ldscript
--- a/sys/conf/vdso_amd64_ia32.ldscript
+++ b/sys/conf/vdso_amd64_ia32.ldscript
@@ -33,6 +33,7 @@
  */
 
 OUTPUT_ARCH(i386)
+TARGET(elf32-i386-freebsd)
 
 PHDRS
 {