diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/FlowRuleProviderService.java b/core/api/src/main/java/org/onlab/onos/net/flow/FlowRuleProviderService.java
index 2f2dd5e..4c0d98d 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/FlowRuleProviderService.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/FlowRuleProviderService.java
@@ -35,6 +35,7 @@
      * Pushes the collection of flow entries currently applied on the given
      * device.
      *
+     * @param deviceId device identifier
      * @param flowEntries collection of flow rules
      */
     void pushFlowMetrics(DeviceId deviceId, Iterable<FlowEntry> flowEntries);