diff --git a/sys/conf/kern.pre.mk b/sys/conf/kern.pre.mk
index 6725bf40d4b6..98495bcaf889 100644
--- a/sys/conf/kern.pre.mk
+++ b/sys/conf/kern.pre.mk
@@ -183,6 +183,7 @@ SYSTEM_DEP+= ${LDSCRIPT}
 MKMODULESENV+=	MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
 MKMODULESENV+=	MACHINE_CPUARCH=${MACHINE_CPUARCH}
 MKMODULESENV+=	MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
+MKMODULESENV+=	ARCH_FLAGS="${ARCH_FLAGS}"
 .if (${KERN_IDENT} == LINT)
 MKMODULESENV+=	ALL_MODULES=LINT
 .endif
diff --git a/sys/conf/kmod.mk b/sys/conf/kmod.mk
index 3cbdc40a8209..1136efcd04a0 100644
--- a/sys/conf/kmod.mk
+++ b/sys/conf/kmod.mk
@@ -359,7 +359,7 @@ ${_src}:
 .endif
 
 # Respect configuration-specific C flags.
-CFLAGS+=	${CONF_CFLAGS}
+CFLAGS+=	${ARCH_FLAGS} ${CONF_CFLAGS}
 
 MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \
 	dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \