diff --git a/meta-openbmc-machines/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf b/meta-openbmc-machines/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf
index 3cadc65..3d88c87 100644
--- a/meta-openbmc-machines/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf
+++ b/meta-openbmc-machines/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf
@@ -3,5 +3,7 @@
 
 UBOOT_MACHINE = "ast_g5_phy_config"
 
+FLASH_SIZE = "32768"
+
 require conf/machine/include/ast2500.inc
 require conf/machine/include/obmc-bsp-common.inc