diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 2bbebd9e..e0994cc6 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -23,6 +23,7 @@
     <string name="new_timer">New Timer</string>
 
     <plurals name="timer_notification_msg">
+        <item quantity="one">%d timer is running</item>
         <item quantity="other">%d timers are running</item>
     </plurals>