diff --git a/src/controllers/tanksController.js b/src/controllers/tanksController.js
index 3833d83c..194d438d 100644
--- a/src/controllers/tanksController.js
+++ b/src/controllers/tanksController.js
@@ -2394,7 +2394,7 @@ const sendNotification = async (customerId, fcmIds, title, body) => {
       const now = new Date();
       const lastSent = new Date(lastNotificationSent || 0);
 
-      // If preference is not "always", check the timing
+     // If preference is not "always", check the timing
       // if (notificationPreference !== "always") {
       //   let minInterval = 0;
 
@@ -2418,7 +2418,7 @@ const sendNotification = async (customerId, fcmIds, title, body) => {
       // }
 
       // Send notifications
-      const notificationPromises = validTokens.map(async (token) => {
+      const notificationPromises = flatTokens.map(async (token) => {
         try {
           const response = await admin.messaging().send({
             notification: { title, body },