diff --git a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
index 8ec017c07..1d5f00c1f 100644
--- a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
+++ b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
@@ -348,12 +348,13 @@ class AccompanyingPeriod
      */
     public function getParticipationsContainsPerson(Person $person): Collection
     {
-        return $this->getParticipations($person)->filter(
-            function(AccompanyingPeriodParticipation $participation) use ($person) {
-                if ($person === $participation->getPerson()) {
-                    return $participation;
+        return $this
+            ->getParticipations()
+            ->filter(
+                static function(AccompanyingPeriodParticipation $participation) use ($person): bool {
+                    return $person === $participation->getPerson();
                 }
-            });
+            );
     }
 
     /**