diff --git a/bin/compile b/bin/compile
index e67384b..cc94976 100755
--- a/bin/compile
+++ b/bin/compile
@@ -181,12 +181,12 @@ done
 
 # Set context environment variables.
 set-env PATH '$HOME/.heroku/python/bin:$PATH'
-set-default-env PYTHONUNBUFFERED true
+set-env PYTHONHOME /app/.heroku/python/
+set-env PYTHONUNBUFFERED true
 set-default-env LIBRARY_PATH /app/.heroku/vendor/lib
 set-default-env LD_LIBRARY_PATH /app/.heroku/vendor/lib
 set-default-env LANG en_US.UTF-8
 set-default-env PYTHONHASHSEED random
-set-default-env PYTHONHOME /app/.heroku/python/
 set-default-env PYTHONPATH /app/