diff --git a/xero.module b/xero.module
index 5d84b3c..96add02 100644
--- a/xero.module
+++ b/xero.module
@@ -396,7 +396,7 @@ function xero_form_helper($type = 'Contacts', $default = '') {
 function xero_get_cache($type = 'Contacts') {
   $cached = cache_get('xero_' . strtolower($type), 'cache');
 
-  if (!is_numeric($cached)) {
+  if (!is_numeric($cached) && $cached !== false) {
     return $cached->data;
   }