diff --git a/meta-aspeed/conf/machine/evb-ast2500.conf b/meta-aspeed/conf/machine/evb-ast2500.conf
index 6946c52..4de380f 100644
--- a/meta-aspeed/conf/machine/evb-ast2500.conf
+++ b/meta-aspeed/conf/machine/evb-ast2500.conf
@@ -7,3 +7,5 @@
 require conf/machine/include/obmc-evb-common.inc
 
 SERIAL_CONSOLES = "115200;ttyS4"
+
+FLASH_SIZE = "32768"