diff --git a/arrays/ParallelPrefix3.java b/arrays/ParallelPrefix3.java
index 45297cb8..9b976e92 100644
--- a/arrays/ParallelPrefix3.java
+++ b/arrays/ParallelPrefix3.java
@@ -2,7 +2,7 @@
 // (c)2017 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://OnJava8.com for more book information.
-// {ValidateByHand} CI Systems have trouble
+// !!!! CI Systems have trouble
 import java.util.*;
 
 public class ParallelPrefix3 {