diff --git a/board/ipe337/env/bin/boot b/board/ipe337/env/bin/boot
index ee10b46..20c59b9 100644
--- a/board/ipe337/env/bin/boot
+++ b/board/ipe337/env/bin/boot
@@ -1,19 +1,19 @@
 . /env/config
 
-if [ x$1 = "xflash" ]; then 
+if [ x$1 = xflash ]; then
 	root=flash
 	kernel=flash
 fi
 
-if [ x$1 = "xnet" ]; then
+if [ x$1 = xnet ]; then
 	root=net
 	kernel=net
 fi
 
-if [ "$root" = flash ]; then
+if [ $root = flash ]; then
 	bootargs="$bootargs root=/dev/mtdblock4 rootfstype=jffs2"
 else
-	if [ "$ip" = dhcp ]; then
+	if [ x$ip = xdhcp ]; then
 		bootargs="$bootargs ip=dhcp"
 	else
 		bootargs="$bootargs ip=$eth0.ipaddr:$eth0.serverip:$eth0.gateway:$eth0.netmask:::"
@@ -23,8 +23,8 @@
 
 bootargs="$bootargs mtdparts=physmap-flash.0:$mtdparts"
 
-if [ "$kernel" = net ]; then
-	if [ $ip = dhcp ]; then
+if [ $kernel = net ]; then
+	if [ x$ip = xdhcp ]; then
 		dhcp
 	fi
 	tftp $uimage uImage