diff --git a/InvenTree/templates/js/modals.js b/InvenTree/templates/js/modals.js
index b621caab80..f447fdce72 100644
--- a/InvenTree/templates/js/modals.js
+++ b/InvenTree/templates/js/modals.js
@@ -89,6 +89,15 @@ function setFieldOptions(fieldName, optionList, options={}) {
 }
 
 
+function clearFieldOptions(fieldName) {
+    /**
+     * Clear (emtpy) the options list for a particular field
+     */
+
+    setFieldOptions(fieldName, []);
+}
+
+
 function reloadFieldOptions(fieldName, options) {
     /* Reload the options for a given field,
      * using an AJAX request.
diff --git a/InvenTree/templates/js/stock.js b/InvenTree/templates/js/stock.js
index a0601aeb13..8f06d403ee 100644
--- a/InvenTree/templates/js/stock.js
+++ b/InvenTree/templates/js/stock.js
@@ -1218,6 +1218,17 @@ function createNewStockItem(options) {
             field: 'part',
             action: function(value) {
 
+                if (!value) {
+                    // No part chosen
+                    
+                    clearFieldOptions('supplier_part');
+                    enableField('serial_numbers', false);
+                    enableField('purchase_price_0', false);
+                    enableField('purchase_price_1', false);
+
+                    return;
+                }
+
                 // Reload options for supplier part
                 reloadFieldOptions(
                     'supplier_part',
@@ -1243,6 +1254,9 @@ function createNewStockItem(options) {
                             enableField('serial_numbers', response.trackable);
                             clearField('serial_numbers');
 
+                            enableField('purchase_price_0', response.purchaseable);
+                            enableField('purchase_price_1', response.purchaseable);
+
                             // Populate the expiry date
                             if (response.default_expiry <= 0) {
                                 // No expiry date