diff --git a/res/values-ja/strings.xml b/res/values-ja/strings.xml
index df122cb..8cd353d 100644
--- a/res/values-ja/strings.xml
+++ b/res/values-ja/strings.xml
@@ -92,7 +92,7 @@
     <string name="menu_displayGroup" msgid="5655505437727616553">"表示オプション"</string>
     <string name="displayGroups" msgid="2278964020773993336">"表示オプション"</string>
     <string name="send_to_voicemail_checkbox" msgid="9001686764070676353">"ボイスメールに自動転送する"</string>
-    <string name="default_ringtone" msgid="9099988849649827972">"端末既定"</string>
+    <string name="default_ringtone" msgid="9099988849649827972">"プリセット着信音"</string>
     <string name="changePicture" msgid="2943329047610967714">"アイコンを変更"</string>
     <string name="removePicture" msgid="3041230993155966350">"アイコンを削除"</string>
     <string name="noContacts" msgid="8579310973261953559">"連絡先がありません。"</string>