diff --git a/configs/spear600_usbtty_defconfig b/configs/spear600_usbtty_defconfig
index 68b11cc..4714959 100644
--- a/configs/spear600_usbtty_defconfig
+++ b/configs/spear600_usbtty_defconfig
@@ -1,6 +1,6 @@
 CONFIG_ARM=y
 CONFIG_TARGET_SPEAR600=y
-CONFIG_SYS_EXTRA_OPTIONS="spear600,usbtty"
+CONFIG_SYS_EXTRA_OPTIONS="SPEAR600,USBTTY"
 CONFIG_BOOTDELAY=-1
 CONFIG_CMD_I2C=y
 # CONFIG_CMD_SETEXPR is not set