fix for cbench
diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/TrafficTreatment.java b/core/api/src/main/java/org/onlab/onos/net/flow/TrafficTreatment.java
index b8b9c10..068bc2c 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/TrafficTreatment.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/TrafficTreatment.java
@@ -2,6 +2,8 @@
 
 import java.util.List;
 
+import org.onlab.onos.net.flow.instructions.Instruction;
+
 /**
  * Abstraction of network traffic treatment.
  */