diff --git a/modules/bindings/tests/test_hbplus.py b/modules/bindings/tests/test_hbplus.py
index 87a32d2823174522525443524378395cc4cdc148..ecc91fbc2f5427481dc46340ccafb593d16142ea 100644
--- a/modules/bindings/tests/test_hbplus.py
+++ b/modules/bindings/tests/test_hbplus.py
@@ -1,4 +1,5 @@
 import unittest
+import sys
 from ost import *
 from ost import settings
 from ost.bindings import hbplus