diff --git a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/Comment.php b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/Comment.php
index 595ffa35f..039489864 100644
--- a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/Comment.php
+++ b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/Comment.php
@@ -36,7 +36,7 @@ class Comment implements TrackCreationInterface, TrackUpdateInterface
      * inversedBy="comments")
      * @ORM\JoinColumn(nullable=false, onDelete="CASCADE")
      */
-    private $accompanyingPeriod;
+    private ?AccompanyingPeriod $accompanyingPeriod;
 
     /**
      * @ORM\Column(type="text")
@@ -44,20 +44,20 @@ class Comment implements TrackCreationInterface, TrackUpdateInterface
      * @Assert\NotBlank
      * @Assert\NotNull
      */
-    private $content;
+    private ?string $content;
 
     /**
      * @ORM\Column(type="datetime")
      * @Groups({"read", "docgen:read"})
      */
-    private $createdAt;
+    private ?DateTimeInterface $createdAt;
 
     /**
      * @ORM\ManyToOne(targetEntity=User::class)
      * @ORM\JoinColumn(nullable=false)
      * @Groups({"read", "docgen:read"})
      */
-    private $creator;
+    private ?User $creator;
 
     /**
      * @ORM\Id
@@ -65,20 +65,20 @@ class Comment implements TrackCreationInterface, TrackUpdateInterface
      * @ORM\Column(type="integer")
      * @Groups({"read", "docgen:read"})
      */
-    private $id;
+    private ?int $id;
 
     /**
      * @ORM\Column(type="datetime")
      * @Groups({"read"})
      */
-    private $updatedAt;
+    private ?DateTimeInterface $updatedAt;
 
     /**
      * @ORM\ManyToOne(targetEntity=User::class)
      * @ORM\JoinColumn(nullable=false)
      * @Groups({"read"})
      */
-    private $updatedBy;
+    private ?User $updatedBy;
 
     public function getAccompanyingPeriod(): ?AccompanyingPeriod
     {