diff --git a/apps/foo/src/main/java/org/onlab/onos/foo/IOLoopTestClient.java b/apps/foo/src/main/java/org/onlab/onos/foo/IOLoopTestClient.java
index 29a1904..ebbe5bc 100644
--- a/apps/foo/src/main/java/org/onlab/onos/foo/IOLoopTestClient.java
+++ b/apps/foo/src/main/java/org/onlab/onos/foo/IOLoopTestClient.java
@@ -298,7 +298,7 @@
             List<TestMessage> batch = Lists.newArrayListWithCapacity(size);
             for (int i = 0; i < size; i++) {
                 batch.add(new TestMessage(msgLength, currentTimeMillis(), 0,
-                                          this.stream.padding(msgLength)));
+                                          stream.padding()));
             }
             acquire(size);
             stream.write(batch);