diff --git a/java/hop/TestPingPong.java b/java/hop/TestPingPong.java
index c8e7107..e37dfae 100644
--- a/java/hop/TestPingPong.java
+++ b/java/hop/TestPingPong.java
@@ -57,7 +57,7 @@ public class TestPingPong {
         long startTime = System.currentTimeMillis();
         for (int i = 0; i < 100000; i++) {
             api.post("req", "request", Integer.toString(i), null);
-            //System.out.println("Reply: " + sub.getQueue().take());
+	    sub.getQueue().take();
             int j = i + 1;
             if ((j % 100) == 0) {
                 long now = System.currentTimeMillis();