diff --git a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
index 9841a99f3..c90f8b4f9 100644
--- a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
+++ b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
@@ -447,12 +447,13 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
      */
     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();
                 }
-            });
+            );
     }
 
     /**
@@ -462,12 +463,13 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
      */
     public function getOpenParticipationContainsPerson(Person $person): ?AccompanyingPeriodParticipation
     {
-        $collection = $this->getParticipationsContainsPerson($person)->filter(
-            function(AccompanyingPeriodParticipation $participation) use ($person) {
-                if (NULL === $participation->getEndDate()) {
-                    return $participation;
+        $collection = $this
+            ->getParticipationsContainsPerson($person)
+            ->filter(
+                static function(AccompanyingPeriodParticipation $participation): bool {
+                    return null === $participation->getEndDate();
                 }
-            });
+            );
 
         return $collection->count() > 0 ? $collection->first() : NULL;
     }
@@ -557,15 +559,16 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
             return false;
         }
 
-        $participation = $this->getParticipationsContainsPerson($person);
-        if (!null === $participation)
+        $participation = $this->getOpenParticipationContainsPerson($person);
+
+        if (null === $participation)
         {
-            $person = $participation->getPerson();
-            $periods = $person->getAccompanyingPeriodsOrdered();
-            return end($periods) === $this;
+            return false;
         }
 
-        return false;
+        $periods = $participation->getPerson()->getAccompanyingPeriodsOrdered();
+
+        return end($periods) === $this;
     }
 
     /**
@@ -825,14 +828,18 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
 
     /**
      * Get a list of all persons which are participating to this course
+     *
+     * @psalm-return Collection<int, Person>
      */
     public function getPersons(): Collection
     {
-        return $this->participations->map(
-            function(AccompanyingPeriodParticipation $participation) {
-                return $participation->getPerson();
-            }
-        );
+        return $this
+            ->participations
+            ->map(
+                static function(AccompanyingPeriodParticipation $participation): Person {
+                    return $participation->getPerson();
+                }
+            );
     }
 
     public function setCreatedAt(\DateTimeInterface $datetime): self