diff --git a/filefield_widget.inc b/filefield_widget.inc
index cc91948..00d8879 100644
--- a/filefield_widget.inc
+++ b/filefield_widget.inc
@@ -479,7 +479,7 @@ function theme_filefield_widget($element) {
 
 function theme_filefield_widget_preview($item) {
   // Remove the current description so that we get the filename as the link.
-  if (isset($item['data']['description'])) {
+  if (isset($item['data']['description']) && is_array($item['data'])) {
     unset($item['data']['description']);
   }