diff --git a/meta-ast2400/conf/machine/include/ast2400.inc b/meta-ast2400/conf/machine/include/ast2400.inc
index 3107dc0..6e02283 100644
--- a/meta-ast2400/conf/machine/include/ast2400.inc
+++ b/meta-ast2400/conf/machine/include/ast2400.inc
@@ -10,4 +10,6 @@
 UBOOT_ENTRYPOINT ?= "0x40001000"
 UBOOT_LOADADDRESS ?= "0x40001000"
 
+MACHINE_EXTRA_RDEPENDS += "udev-aspeed-vuart"
+
 require conf/machine/include/tune-arm926ejs.inc
diff --git a/meta-ast2500/conf/machine/include/ast2500.inc b/meta-ast2500/conf/machine/include/ast2500.inc
index 7e4f5b9..6d2feb6 100644
--- a/meta-ast2500/conf/machine/include/ast2500.inc
+++ b/meta-ast2500/conf/machine/include/ast2500.inc
@@ -11,5 +11,7 @@
 INITRD_IMAGE_ENTRYPOINT = "0x81000000"
 INITRD_IMAGE_LOADADDRESS = "0x81000000"
 
+MACHINE_EXTRA_RDEPENDS += "udev-aspeed-vuart"
+
 DEFAULTTUNE = "armv6-novfp"
 require conf/machine/include/arm/arch-armv6.inc