diff --git a/app/src/main/java/com/example/citrusclient/viewmodels/BooksViewModel.java b/app/src/main/java/com/example/citrusclient/viewmodels/BooksViewModel.java
index 37989ea..cbf3f2a 100644
--- a/app/src/main/java/com/example/citrusclient/viewmodels/BooksViewModel.java
+++ b/app/src/main/java/com/example/citrusclient/viewmodels/BooksViewModel.java
@@ -25,7 +25,7 @@
     private final MutableLiveData<String> publicityLiveData;
     private final MutableLiveData<String> favoritedLiveData;
 
-    public BooksViewModel(MutableLiveData<HashMap<Integer, Book>> booksIdLiveData) {
+    public BooksViewModel() {
         this.retrofit = new Retrofit.Builder()
                 .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/citrus/")
                 .addConverterFactory(JacksonConverterFactory.create())
@@ -39,7 +39,6 @@
     }
 
     public MutableLiveData<HashMap<Integer, Book>> getBookLiveData() { return this.booksLiveData;}//本の一覧を返す
-    //public MutableLiveData<HashMap<Integer, Book>> getBooksIdLiveData() {return this.booksIdLiveData;}//本の情報を取得
     public MutableLiveData<String> getTitleLiveData() {return this.titleLiveData;}//本のタイトルを返す
     public MutableLiveData<String> getPublicityLiveData() {return this.publicityLiveData;}//本の公開状態を返す