diff --git a/tests/flow_matches.py b/tests/flow_matches.py
index 862633d..105b178 100644
--- a/tests/flow_matches.py
+++ b/tests/flow_matches.py
@@ -10,6 +10,7 @@
 import unittest
 import random
 
+from oftest import config
 import oftest.controller as controller
 import oftest.cstruct as ofp
 import oftest.message as message