diff --git a/gluon/shell.py b/gluon/shell.py
index baecdb52..92b6334b 100644
--- a/gluon/shell.py
+++ b/gluon/shell.py
@@ -20,6 +20,7 @@ import logging
 import types
 import re
 import glob
+import site
 import traceback
 import gluon.fileutils as fileutils
 from gluon.settings import global_settings