diff --git a/src/chapter00/HelloWorld.java b/src/chapter00/HelloWorld.java
index 5084f89..2bf3635 100644
--- a/src/chapter00/HelloWorld.java
+++ b/src/chapter00/HelloWorld.java
@@ -3,7 +3,7 @@
 /* 1. */ /* HelloWorld.java */
 /* 2. */ /* A Sample Java Application Program */
 
-/* 3. */ class HelloWorld {
+/* 3. */ public class HelloWorld {
 
 /* 5. */ public static void main(String args[])
 /* 6. */ {