diff --git a/meta-ibm/meta-witherspoon/recipes-phosphor/mboxd/mboxd_%.bbappend b/meta-ibm/meta-witherspoon/recipes-phosphor/mboxd/mboxd_%.bbappend
index 9ead959..e23d8fa 100644
--- a/meta-ibm/meta-witherspoon/recipes-phosphor/mboxd/mboxd_%.bbappend
+++ b/meta-ibm/meta-witherspoon/recipes-phosphor/mboxd/mboxd_%.bbappend
@@ -1,5 +1,6 @@
 MBOXD_FLASH_SIZE_ibm-ac-server = "64M"
 MBOXD_FLASH_SIZE_mihawk = "64M"
+MBOXD_FLASH_SIZE_rainier = "64M"
 
 FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"