diff --git a/tests/flow_expire.py b/tests/flow_expire.py
index 484f22f..6b497cc 100644
--- a/tests/flow_expire.py
+++ b/tests/flow_expire.py
@@ -11,7 +11,7 @@
 
 from oftest import config
 import oftest.controller as controller
-import oftest.cstruct as ofp
+import ofp
 import oftest.message as message
 import oftest.dataplane as dataplane
 import oftest.action as action