diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
index 26bc786..d10e4dc 100644
--- a/arch/um/Makefile-i386
+++ b/arch/um/Makefile-i386
@@ -16,7 +16,7 @@
 ifeq ("$(origin SUBARCH)", "command line")
 ifneq ("$(shell uname -m | sed -e s/i.86/i386/)", "$(SUBARCH)")
 KBUILD_CFLAGS		+= $(call cc-option,-m32)
-AFLAGS			+= $(call cc-option,-m32)
+KBUILD_AFLAGS		+= $(call cc-option,-m32)
 LINK-y			+= $(call cc-option,-m32)
 UML_OBJCOPYFLAGS	+= -F $(ELF_FORMAT)