diff --git a/src/main/java/org/ntlab/citrusserver/repositories/FavoriteManager.java b/src/main/java/org/ntlab/citrusserver/repositories/FavoriteManager.java
index 48603ad..0a507d3 100644
--- a/src/main/java/org/ntlab/citrusserver/repositories/FavoriteManager.java
+++ b/src/main/java/org/ntlab/citrusserver/repositories/FavoriteManager.java
@@ -1,6 +1,5 @@
 package org.ntlab.citrusserver.repositories;
 import org.ntlab.citrusserver.entities.Account;
-import org.ntlab.citrusserver.entities.Book;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Repository;
 
@@ -8,14 +7,14 @@
 import java.util.HashSet;
 
 @Repository
-public class FavoriteManager implements IAccountListener, IBookListener {
+public class FavoriteManager implements IAccountListener {
     private final AccountManager accountManager;
 
     @Autowired
     public FavoriteManager(AccountManager accountManager, BookManager bookManager) {
         this.accountManager = accountManager;
         this.accountManager.addListener(this);
-        bookManager.addListener(this);
+//        bookManager.addListener(this);
 
     }
 
@@ -144,15 +143,15 @@
     }
 
 
-    @Override
-    public void bookChanged(Account account, Book book) {
-
-    }
-
-    @Override
-    public void bookDeleted(Account account, Book book) {
-        removeFavoriteByBookID(account.getId(), book.getBookId());
-    }
+//    @Override
+//    public void bookChanged(Account account, Book book) {
+//
+//    }
+//
+//    @Override
+//    public void bookDeleted(Account account, Book book) {
+//        removeFavoriteByBookID(account.getId(), book.getBookId());
+//    }
 
 
 }
diff --git a/src/main/java/org/ntlab/citrusserver/resources/BooksRest.java b/src/main/java/org/ntlab/citrusserver/resources/BooksRest.java
index 7ac6f4a..02dd8f3 100644
--- a/src/main/java/org/ntlab/citrusserver/resources/BooksRest.java
+++ b/src/main/java/org/ntlab/citrusserver/resources/BooksRest.java
@@ -22,11 +22,13 @@
 
     private final BookManager bookManager;
     private final AccountManager accountManager;
+    private final FavoriteManager favoriteManager;
     @Autowired  // スプリングブートにいうサイン
-    public BooksRest(BookManager bm, AccountManager ac){//public クラス名（）がコンストラクタ
+    public BooksRest(BookManager bm, AccountManager ac, FavoriteManager fm){//public クラス名（）がコンストラクタ
 
         bookManager = bm;
         accountManager = ac;
+        favoriteManager = fm;
     }
 
 
@@ -78,6 +80,7 @@
         accountCheck(account_id);
         tokenCheck(account_id, token);
         bookManager.deleteBook(account_id, book_id);
+        favoriteManager.removeFavoriteByBookID(account_id, book_id);
         return "success";
     }