diff --git a/site/models/customer.php b/site/models/customer.php
index 10fcd41..3df1ebb 100644
--- a/site/models/customer.php
+++ b/site/models/customer.php
@@ -233,6 +233,18 @@ class Customer extends AppModel {
   function update($id) {
     $this->prEnter(compact('id'));
 
+    if (empty($id)) {
+      $customers = $this->find('all', array('contain' => false, 'fields' => array('id')));
+      foreach ($customers AS $customer) {
+	// This SHOULDN'T happen, but check to be sure
+	// or we'll get infinite recursion.
+	if (empty($customer['Customer']['id']))
+	  continue;
+	$this->update($customer['Customer']['id']);
+      }
+      return;
+    }
+
     // REVISIT <AP>: 20090812
     //  updateLeaseCount is handled directly when needed.
     //  Should we simplify by just doing it anyway?