diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index efaf2be..8ef181e 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -26,7 +26,7 @@
                 app:layout_constraintEnd_toEndOf="parent"
                 app:layout_constraintStart_toStartOf="parent"
                 app:layout_constraintTop_toTopOf="parent"
-                app:title="ナビゲーションサンプル" />
+                app:title="@string/app_name" />
 
             <androidx.fragment.app.FragmentContainerView
                 android:id="@+id/fragmentContainerView"