diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/DefaultTrafficTreatment.java b/core/api/src/main/java/org/onlab/onos/net/flow/DefaultTrafficTreatment.java
index c0b3986..a63ae13 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/DefaultTrafficTreatment.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/DefaultTrafficTreatment.java
@@ -63,6 +63,7 @@
      * Returns a new traffic treatment builder primed to produce entities
      * patterned after the supplied treatment.
      *
+     * @param treatment base treatment
      * @return traffic treatment builder
      */
     public static TrafficTreatment.Builder builder(TrafficTreatment treatment) {