diff --git a/backend/src/routes/productSpreaderSettings.js b/backend/src/routes/productSpreaderSettings.js
index 2b60a86..e63c07f 100644
--- a/backend/src/routes/productSpreaderSettings.js
+++ b/backend/src/routes/productSpreaderSettings.js
@@ -17,14 +17,7 @@ const spreaderSettingSchema = Joi.object({
   settingValue: Joi.string().max(20).required(),
   rateDescription: Joi.string().max(200).allow(null, '').optional(),
   notes: Joi.string().allow(null, '').optional()
-}).xor('productId', 'userProductId')
-  .when('equipmentId', {
-    is: Joi.exist(),
-    then: Joi.object(), // When equipmentId exists, spreaderBrand is optional
-    otherwise: Joi.object({
-      spreaderBrand: Joi.string().max(100).required() // When no equipmentId, require spreaderBrand
-    })
-  }); // Must have either productId or userProductId, but not both
+}).xor('productId', 'userProductId'); // Must have either productId or userProductId, but not both
 
 const idParamSchema = Joi.object({
   id: Joi.number().integer().positive().required()