diff --git a/backend/src/routes/productSpreaderSettings.js b/backend/src/routes/productSpreaderSettings.js
index 010694f..2e0b2f7 100644
--- a/backend/src/routes/productSpreaderSettings.js
+++ b/backend/src/routes/productSpreaderSettings.js
@@ -30,6 +30,10 @@ const idParamSchema = Joi.object({
   id: Joi.number().integer().positive().required()
 });
 
+const userProductIdParamSchema = Joi.object({
+  userProductId: Joi.number().integer().positive().required()
+});
+
 // @route   GET /api/product-spreader-settings/product/:productId
 // @desc    Get spreader settings for a specific product
 // @access  Private
@@ -66,7 +70,7 @@ router.get('/product/:productId', validateParams(idParamSchema), async (req, res
 // @route   GET /api/product-spreader-settings/user-product/:userProductId
 // @desc    Get spreader settings for a specific user product
 // @access  Private
-router.get('/user-product/:userProductId', validateParams(idParamSchema), async (req, res, next) => {
+router.get('/user-product/:userProductId', validateParams(userProductIdParamSchema), async (req, res, next) => {
   try {
     const userProductId = req.params.userProductId;
     
diff --git a/frontend/src/pages/Products/Products.js b/frontend/src/pages/Products/Products.js
index 3faf851..8c36283 100644
--- a/frontend/src/pages/Products/Products.js
+++ b/frontend/src/pages/Products/Products.js
@@ -836,7 +836,12 @@ const EditProductModal = ({ product, onSubmit, onCancel, sharedProducts, categor
           });
           if (response.ok) {
             const data = await response.json();
+            console.log('Received spreader settings data:', data);
             setEditSpreaderSettings(data.data?.settings || []);
+          } else {
+            console.error('Failed to fetch spreader settings:', response.status, response.statusText);
+            const errorText = await response.text();
+            console.error('Error response body:', errorText);
           }
         } catch (error) {
           console.error('Failed to load spreader settings:', error);