diff --git a/src/Service/Assignment/TimelineService.php b/src/Service/Assignment/TimelineService.php
index 065b27b..b6d4d59 100644
--- a/src/Service/Assignment/TimelineService.php
+++ b/src/Service/Assignment/TimelineService.php
@@ -5,6 +5,7 @@ namespace App\Service\Assignment;
 use App\Entity\Assignment;
 use App\Model\TimelineItem;
 use Carbon\CarbonPeriod;
+use function Symfony\Component\String\b;
 
 class TimelineService
 {
@@ -59,10 +60,7 @@ class TimelineService
             $fitsRow = true;
             foreach ($row as $entry) {
                 /** @var TimelineItem $entry */
-                if (
-                    isset($row[$item->getKey()]) ||
-                    $entry->getDateTo() >= $item->getDateFrom() && $entry->getDateFrom() <= $item->getDateTo()
-                ) {
+                if ($entry->getDateTo() >= $item->getDateFrom() && $entry->getDateFrom() <= $item->getDateTo()) {
                     $fitsRow = false;
                 }
             }