diff --git a/arch/x86/Kbuild b/arch/x86/Kbuild
index e5287d8..61b6d51 100644
--- a/arch/x86/Kbuild
+++ b/arch/x86/Kbuild
@@ -16,3 +16,7 @@
 
 obj-y += platform/
 obj-y += net/
+
+ifeq ($(CONFIG_X86_64),y)
+obj-$(CONFIG_KEXEC) += purgatory/
+endif