diff --git a/arch/s390/purgatory/Makefile b/arch/s390/purgatory/Makefile
index 360ada80d20c..3e2c17ba04de 100644
--- a/arch/s390/purgatory/Makefile
+++ b/arch/s390/purgatory/Makefile
@@ -51,4 +51,4 @@ $(obj)/purgatory.ro: $(obj)/purgatory $(obj)/purgatory.chk FORCE
 $(obj)/kexec-purgatory.o: $(obj)/kexec-purgatory.S $(obj)/purgatory.ro FORCE
 	$(call if_changed_rule,as_o_S)
 
-obj-$(CONFIG_ARCH_HAS_KEXEC_PURGATORY) += kexec-purgatory.o
+obj-y += kexec-purgatory.o