diff --git a/app/Http/Controllers/TrackerController.php b/app/Http/Controllers/TrackerController.php
index 6f9d223..57bd9da 100644
--- a/app/Http/Controllers/TrackerController.php
+++ b/app/Http/Controllers/TrackerController.php
@@ -47,20 +47,18 @@ class TrackerController extends Controller
         if ($fromCheckin) {
             $tripData->checkins = array_filter(
                 $tripData->checkins,
-                function ($key) use ($fromCheckin) {
-                    return $key >= $fromCheckin;
-                },
-                ARRAY_FILTER_USE_KEY
+                function ($checkin) use ($fromCheckin) {
+                    return $checkin->id >= $fromCheckin;
+                }
             );
         }
 
         if ($toCheckin) {
             $tripData->checkins = array_filter(
                 $tripData->checkins,
-                function ($key) use ($toCheckin) {
-                    return $key <= $toCheckin;
-                },
-                ARRAY_FILTER_USE_KEY
+                function ($checkin) use ($toCheckin) {
+                    return $checkin->id <= $toCheckin;
+                }
             );
         }