diff --git a/resources/inc/class.so_resources.inc.php b/resources/inc/class.so_resources.inc.php
index 3c7190bca3..9c1e840409 100755
--- a/resources/inc/class.so_resources.inc.php
+++ b/resources/inc/class.so_resources.inc.php
@@ -47,7 +47,7 @@ class so_resources
 		{
 			$wherecats .= ($wherecats ? " OR " : " AND ( " ) .'cat_id' . "='".$cat_id."'";
 		}
-		$wherecats .= " ) ";
+		$wherecats .= $wherecats ? " ) " : "";
 
 		$this->db->query( 'SELECT '.$select." FROM ".$this->rs_table." WHERE ".$where.$wherecats.
 				($order_by != '' ? " ORDER BY $order_by" : ''),__LINE__,__FILE__);
diff --git a/resources/inc/class.ui_resources.inc.php b/resources/inc/class.ui_resources.inc.php
index 81696578a5..c2a38672e9 100755
--- a/resources/inc/class.ui_resources.inc.php
+++ b/resources/inc/class.ui_resources.inc.php
@@ -70,8 +70,7 @@ class ui_resources
 		$content['nm']['no_filter'] 	= False;
 		$content['nm']['filter_label']	= lang('Category');
 		$content['nm']['filter_help']	= lang('Select a category'); // is this used???
-		$content['nm']['options-filter']= array('0' => lang('all categories'));
-		$content['nm']['options-filter']+= $this->bo->acl->get_cats(PHPGW_ACL_READ);
+		$content['nm']['options-filter']= array('0'=>lang('all categories'))+(array)$this->bo->acl->get_cats(PHPGW_ACL_READ);
 		$content['nm']['no_filter2']	= True;
 		$content['nm']['no_cat']	= True;