diff --git a/openflow/api/src/main/java/org/onlab/onos/openflow/controller/OpenFlowPacketContext.java b/openflow/api/src/main/java/org/onlab/onos/openflow/controller/OpenFlowPacketContext.java
index 13092b2..0d085dd 100644
--- a/openflow/api/src/main/java/org/onlab/onos/openflow/controller/OpenFlowPacketContext.java
+++ b/openflow/api/src/main/java/org/onlab/onos/openflow/controller/OpenFlowPacketContext.java
@@ -31,6 +31,7 @@
     /**
      * Blocks further responses (ie. send() calls) on this
      * packet in event.
+     * @return true if blocks
      */
     public boolean block();