diff --git a/src/Plugin/Commerce/Condition/ShipmentWeight.php b/src/Plugin/Commerce/Condition/ShipmentWeight.php
index 11661ac..2df7c8b 100644
--- a/src/Plugin/Commerce/Condition/ShipmentWeight.php
+++ b/src/Plugin/Commerce/Condition/ShipmentWeight.php
@@ -27,7 +27,7 @@ class ShipmentWeight extends ConditionBase {
   public function defaultConfiguration() {
     return [
       'operator' => '>',
-      'amount' => NULL,
+      'weight' => NULL,
     ] + parent::defaultConfiguration();
   }