diff --git a/meta-ast2400/recipes-bsp/u-boot/u-boot-fw-utils_%.bbappend b/meta-ast2400/recipes-bsp/u-boot/u-boot-fw-utils_%.bbappend
index 070f389..375359e 100644
--- a/meta-ast2400/recipes-bsp/u-boot/u-boot-fw-utils_%.bbappend
+++ b/meta-ast2400/recipes-bsp/u-boot/u-boot-fw-utils_%.bbappend
@@ -1,8 +1,8 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
+FILESEXTRAPATHS_prepend_ast2400 := "${THISDIR}/files:"
 
-SRC_URI += "file://fw_env.config"
+SRC_URI_append_ast2400 = " file://fw_env.config"
 
-do_install_append() {
+do_install_append_ast2400() {
     if [ -e ${WORKDIR}/fw_env.config ] ; then
         install -d ${D}${sysconfdir}
         install -m 644 ${WORKDIR}/fw_env.config ${D}${sysconfdir}/fw_env.config