diff --git a/setup b/setup
index 55e7ae29..579560c9 100644
--- a/setup
+++ b/setup
@@ -5,4 +5,4 @@
 # Please use 'source ./setup'.
 #----------------------------------------------------------------
 
-export TWLIPL_ROOT=`cygpath -m $PWD`
+export TWL_IPL_RED_ROOT=`cygpath -m $PWD`