diff --git a/src/Entity/Disposition.php b/src/Entity/Disposition.php
index c4eb649..0b07ffd 100644
--- a/src/Entity/Disposition.php
+++ b/src/Entity/Disposition.php
@@ -214,7 +214,7 @@ class Disposition implements BlameableEntityInterface, TimestampableEntityInterf
 
         $assignment = $this->getAssignment();
         $assignmentPeriod = $assignment->getEffectivePeriod();
-        $dueDateFrom = $this->getCreatedAt()->modify('+ 7days');
+        $dueDateFrom = $this->getCreatedAt()->modify('+7 days');
         $dueDateTo = $assignmentPeriod->end->modify('-1 day');
 
         $period = CarbonPeriod::create($dueDateFrom, $dueDateTo);