diff --git a/contemplate.module b/contemplate.module
index e843e96..ded7c8e 100644
--- a/contemplate.module
+++ b/contemplate.module
@@ -842,7 +842,7 @@ function contemplate_eval($tmplt, $obj, &$xml_elements) {
  * Eval the RSS enclosure field
  */
 function contemplate_eval_enclosure($field, $node) {
-  $tmplt = '<?php print ' . $field . ' ?>';
+  $tmplt = '<?php if (isset(' . $field . ')) print ' . $field . ' ?>';
   $xml_elements = array();
   $fid = contemplate_eval($tmplt, $node, $xml_elements);
   if (is_numeric($fid)) {