diff --git a/meta-aspeed/conf/machine/evb-ast2600.conf b/meta-aspeed/conf/machine/evb-ast2600.conf
index 9fb38e0..e011045 100644
--- a/meta-aspeed/conf/machine/evb-ast2600.conf
+++ b/meta-aspeed/conf/machine/evb-ast2600.conf
@@ -5,3 +5,6 @@
 require conf/machine/include/ast2600.inc
 
 SERIAL_CONSOLES = "115200;ttyS4"
+
+# AST2600 EVB has 64MB SPI flash
+FLASH_SIZE = "65536"