diff --git a/src/Bundle/ChillBudgetBundle/Entity/AbstractElement.php b/src/Bundle/ChillBudgetBundle/Entity/AbstractElement.php
index 5ff3e142f..73060f40b 100644
--- a/src/Bundle/ChillBudgetBundle/Entity/AbstractElement.php
+++ b/src/Bundle/ChillBudgetBundle/Entity/AbstractElement.php
@@ -150,7 +150,7 @@ abstract class AbstractElement
         return $this;
     }
 
-    public function setHousehold(Household $household): self
+    public function setHousehold(?Household $household): self
     {
         $this->household = $household;