diff --git a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
index dbc3ba182..593cdfc83 100644
--- a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
+++ b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
@@ -217,8 +217,8 @@ class AccompanyingPeriod implements
      *
      * @ORM\Column(type="date")
      * @Groups({"read", "write", "docgen:read"})
-     * @Assert\LessThan(value="today", groups={AccompanyingPeriod::STEP_CONFIRMED})
-     * @Assert\LessThan(propertyPath="closingDate", groups={AccompanyingPeriod::STEP_CONFIRMED})
+     * @Assert\LessThan(value="tomorrow", groups={AccompanyingPeriod::STEP_CONFIRMED})
+     * @Assert\LessThanOrEqual(propertyPath="closingDate", groups={AccompanyingPeriod::STEP_CONFIRMED})
      */
     private ?DateTime $openingDate = null;