diff --git a/SeedDMS_Core/Core/inc.ClassAttribute.php b/SeedDMS_Core/Core/inc.ClassAttribute.php
index f3545af73..d12584b05 100644
--- a/SeedDMS_Core/Core/inc.ClassAttribute.php
+++ b/SeedDMS_Core/Core/inc.ClassAttribute.php
@@ -1239,7 +1239,7 @@ class SeedDMS_Core_AttributeDefinitionGroup { /* {{{ */
 		$db = $this->_dms->getDB();
 
 		$hashtag = md5(implode('', $objtype).$show);
-		if (!isset($this->_attrdefs[$hashtag]) && !$this->_attrdefs[$hashtag]) {
+		if (!isset($this->_attrdefs[$hashtag]) || !$this->_attrdefs[$hashtag]) {
 			/* FIXME: selecting showfilter is not needed if $show=0. I was just to lasy
 			 * to take it out with another if($show) ...
 			 */