diff --git a/feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryArchiveFragment.java b/feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryArchiveFragment.java
index be83d1e1..806afc4f 100644
--- a/feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryArchiveFragment.java
+++ b/feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryArchiveFragment.java
@@ -22,7 +22,7 @@ public class LibraryArchiveFragment extends AppCompatActivity {
                 // 文字をタップしたときの処理
 
                 // 移動先のアクティビティを指定
-                Intent intent = new Intent(LibraryArchiveFragment.this, LibraryXFragment.class);
+                Intent intent = new Intent(LibraryArchiveFragment.this, LibraryDocFragment.class);
 
                 // または、移動先のフラグメントを指定
                 // Intent intent = new Intent(LibraryArchiveFragment.this, TargetFragment.class);
@@ -33,7 +33,7 @@ public class LibraryArchiveFragment extends AppCompatActivity {
                         // 文字をタップしたときの処理
 
                         // 移動先のアクティビティを指定
-                        Intent intent = new Intent(LibraryArchiveFragment.this,  LibraryXFragment.class);
+                        Intent intent = new Intent(LibraryArchiveFragment.this,  LibraryDocFragment.class);
 
                         // データを付加する
                         intent.putExtra("key_name", "value_data");
diff --git a/feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryXFragment.java b/feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryDocFragment.java
similarity index 88%
rename from feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryXFragment.java
rename to feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryDocFragment.java
index ebdc0a3e..b489d496 100644
--- a/feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryXFragment.java
+++ b/feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryDocFragment.java
@@ -8,7 +8,7 @@ import android.widget.TextView;
 
 import androidx.fragment.app.Fragment;
 
-public class LibraryXFragment extends Fragment {
+public class LibraryDocFragment extends Fragment {
 
     private TextView textView;  // フィールドとして TextView を定義
 
@@ -37,8 +37,8 @@ public class LibraryXFragment extends Fragment {
     }
 
     // Factory method for creating a new instance of the fragment
-    public static LibraryXFragment newInstance(String data) {
-        LibraryXFragment fragment = new LibraryXFragment();
+    public static LibraryDocFragment newInstance(String data) {
+        LibraryDocFragment fragment = new LibraryDocFragment();
 
         // フラグメントにデータを渡す
         Bundle args = new Bundle();