Index: money.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/money/money.module,v
retrieving revision 1.1.4.14
diff -u -r1.1.4.14 money.module
--- money.module	4 Mar 2009 11:59:37 -0000	1.1.4.14
+++ money.module	9 Apr 2009 07:01:48 -0000
@@ -176,8 +176,13 @@
         $form['currencies']['#description'] .= ' '. t('The number between square brakets indicates the standard precision for each currency.');
       }
       if (isset($widget['allowed_currencies']) && is_array($widget['allowed_currencies'])) {
-        $allowed_currencies = array_keys(array_filter($widget['allowed_currencies']));
-        $allowed_currencies = array_combine($allowed_currencies, $allowed_currencies);
+        // Get filtered array.
+        $allowed_currencies = array_filter($widget['allowed_currencies']);
+        // If not empty, create array for the form element values.
+        if (!empty($allowed_currencies)) {
+          $allowed_currencies = array_keys($allowed_currencies);
+          $allowed_currencies = array_combine($allowed_currencies, $allowed_currencies);
+        }
       }
       else {
         $allowed_currencies = array();