diff --git a/tools/install_venv_common.py b/tools/install_venv_common.py
index 7bef5bf50..2de8e1c82 100644
--- a/tools/install_venv_common.py
+++ b/tools/install_venv_common.py
@@ -25,6 +25,12 @@ import os
 import subprocess
 import sys
 
+possible_topdir = os.getcwd()
+if os.path.exists(os.path.join(possible_topdir, "quantum",
+                               "__init__.py")):
+    sys.path.insert(0, possible_topdir)
+
+
 from quantum.openstack.common import cfg