diff --git a/.travis.yml b/.travis.yml
index bb600ed..83a0890 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: racket
 
 env:
- - VERSION=5.3.5
+ - RACKET_VERSION=5.3.5
 
 before_install:
  - chmod u+rx ./install-racket.sh
diff --git a/install-racket.sh b/install-racket.sh
index 275f680..1495b58 100644
--- a/install-racket.sh
+++ b/install-racket.sh
@@ -1,8 +1,7 @@
 set -e
 
-# VERSION=5.3.5
-URL="http://download.racket-lang.org/installers/$VERSION/racket/racket-$VERSION-bin-x86_64-linux-ubuntu-precise.sh"
-INSTALL="./racket-$VERSION.sh"
+URL="http://download.racket-lang.org/installers/$RACKET-VERSION/racket/racket-$RACKET-VERSION-bin-x86_64-linux-ubuntu-precise.sh"
+INSTALL="./racket-$RACKET-VERSION.sh"
 
 echo "Downloading $URL to $INSTALL:"
 curl -o $INSTALL $URL