diff --git a/docs/book/07-Implementation-Hiding.md b/docs/book/07-Implementation-Hiding.md
index 8db3083..cec6b2b 100644
--- a/docs/book/07-Implementation-Hiding.md
+++ b/docs/book/07-Implementation-Hiding.md
@@ -77,7 +77,7 @@ package hiding;
 
 ```java
 // hiding/mypackage/MyClass.java
-package hiding.mypackage
+package hiding.mypackage;
 
 public class MyClass {
     // ...