Code Review updates
diff --git a/src/main/java/io/fluo/stress/trie/Diff.java b/src/main/java/io/fluo/stress/trie/Diff.java
index 525a442..aacf7dd 100644
--- a/src/main/java/io/fluo/stress/trie/Diff.java
+++ b/src/main/java/io/fluo/stress/trie/Diff.java
@@ -53,7 +53,7 @@
   public static void main(String[] args) throws Exception {
 
     if (args.length != 1) {
-      System.err.println("Usage: " + Print.class.getSimpleName() + " <fluo props>");
+      System.err.println("Usage: " + Diff.class.getSimpleName() + " <fluo props>");
       System.exit(-1);
     }