diff --git a/src/opinion/Book.java b/src/opinion/Book.java
index cb0efbce85eca036046a055a50a6a3772b1cb9ef..61c5d10ac0a5d0cbc7c9e20fc747a178c7854b65 100644
--- a/src/opinion/Book.java
+++ b/src/opinion/Book.java
@@ -8,7 +8,6 @@ public class Book {
     //Declaration of private class variables
     private String title, kind, author, comment;
     private int nbPages;
-    private float mark;
 
     /**
      * Initialization of private variables with constructor