diff --git a/public/customer-view.js b/public/customer-view.js
index fbd5534..843854f 100644
--- a/public/customer-view.js
+++ b/public/customer-view.js
@@ -13,6 +13,8 @@ export async function loadCustomers() {
     try {
         const response = await fetch('/api/customers');
         customers = await response.json();
+        // Backward compat: quote/invoice modals use global 'customers' variable
+        window.customers = customers;
         renderCustomerView();
     } catch (error) {
         console.error('Error loading customers:', error);