diff --git a/board/RPXlite_dw/README b/board/RPXlite_dw/README
index e88f9aa..28bcb31 100644
--- a/board/RPXlite_dw/README
+++ b/board/RPXlite_dw/README
@@ -94,8 +94,8 @@
 
 #define CONFIG_BOOTCOMMAND                                                      \
 	"bootp; "                                                               \
-	"setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) "     \
-	"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off; "   \
+	"setenv bootargs root=/dev/nfs rw nfsroot=${serverip}:${rootpath} "     \
+	"ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off; "   \
 	"bootm"
 
 This is enough for kernel NFS test. But as debug process goes on, you would expect