diff --git a/src/Model/Look.php b/src/Model/Look.php
index 8fc9e2a..46cc6ae 100644
--- a/src/Model/Look.php
+++ b/src/Model/Look.php
@@ -89,9 +89,9 @@ public function getDisplayableDiscount(): float
         return $this->getDiscount() * 100;
     }
 
-    public function setDiscount(float $discount): void
+    public function setDiscount(?float $discount): void
     {
-        $this->discount = $discount;
+        $this->discount = $discount ?? 0.0;
     }
 
     public function isEnabled(): bool
diff --git a/src/Model/LookInterface.php b/src/Model/LookInterface.php
index 3d0921e..b02fd0c 100644
--- a/src/Model/LookInterface.php
+++ b/src/Model/LookInterface.php
@@ -27,7 +27,7 @@ public function getDiscount(): float;
 
     public function getDisplayableDiscount(): float;
 
-    public function setDiscount(float $discount): void;
+    public function setDiscount(?float $discount): void;
 
     public function isEnabled(): bool;