diff --git a/make/kmodule.mk b/make/kmodule.mk
index 84a7bfbb..2347925c 100644
--- a/make/kmodule.mk
+++ b/make/kmodule.mk
@@ -10,5 +10,10 @@ ifndef PLATFORM
 $(error $$PLATFORM must be set)
 endif
 
+ifndef ARCH
+$(error $$ARCH must be set)
+endif
+
+
 modules:
-	$(ONL)/tools/scripts/kmodbuild.sh "$(KERNELS)" "$(KMODULES)" $(PLATFORM)
+	ARCH=$(ARCH) $(ONL)/tools/scripts/kmodbuild.sh "$(KERNELS)" "$(KMODULES)" $(PLATFORM)