diff --git a/test_release b/test_release
index 7be0359..3618004 100755
--- a/test_release
+++ b/test_release
@@ -1,9 +1,17 @@
 #!/bin/bash
 
+# --------------------------------------------------------------------
+# Install and run tests in ~/tmp
+#
+# Usage:
+#
+# $ ./test_release 1.8.9.0
+# --------------------------------------------------------------------
+
 set -x
 
 if [[ ! $1 ]] ; then 
-  echo "No version \$1 (e.g. 3.2.0)"
+  echo "Must set version as \$1 (e.g. 1.7)"
   exit 1
 fi
 
@@ -12,22 +20,20 @@ vn=$1
 # Get the major.minor Python version
 py=$(python -V | cut -d " " -f 2 | cut -d "." -f 1,2)
 
+mkdir -p ~/tmp
+
 cp dist/cfunits-$vn.tar.gz ~/tmp
 cd ~/tmp
 rm -fr ~/tmp/test ~/tmp/bin ~/tmp/lib ~/tmp/cfunits-$vn
+
 tar zxvf cfunits-$vn.tar.gz
 cd cfunits-$vn
-python setup.py install --home=~/tmp
 
-export PYTHONPATH=~/tmp/lib/python:~/tmp/lib/python/cfunits-${vn}-py${py}.egg:$PYTHONPATH
+export PYTHONPATH=~/tmp/lib/python/cfunits-$vn-py$py.egg:$PYTHONPATH
 
-#cd ~/tmp/lib/python/cfunits/test
-
-cd ~/tmp/lib/python/cfunits-${vn}-py${py}.egg/cfunits/test
+python setup.py install --home=~/tmp
 
+cd ~/tmp/lib/python/cfunits-$vn-py$py.egg/cfunits/test
 python run_tests.py
-test_result_status=$?
 
 set -x
-
-exit $test_result_status