diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/CompletedBatchOperation.java b/core/api/src/main/java/org/onlab/onos/net/flow/CompletedBatchOperation.java
index a7bffe7..597c9cd 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/CompletedBatchOperation.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/CompletedBatchOperation.java
@@ -17,9 +17,9 @@
 
 
 import java.util.Collections;
-
 import java.util.Set;
 
+import com.google.common.base.MoreObjects;
 import com.google.common.collect.ImmutableSet;
 
 /**
@@ -73,4 +73,12 @@
         return failedIds;
     }
 
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("success?", success)
+                .add("failedItems", failures)
+                .add("failedIds", failedIds)
+                .toString();
+    }
 }