diff --git a/calendar/inc/class.calendar_owner_etemplate_widget.inc.php b/calendar/inc/class.calendar_owner_etemplate_widget.inc.php
index 8bfc3eeee0..e3f4dd7b82 100644
--- a/calendar/inc/class.calendar_owner_etemplate_widget.inc.php
+++ b/calendar/inc/class.calendar_owner_etemplate_widget.inc.php
@@ -82,9 +82,9 @@ class calendar_owner_etemplate_widget extends Etemplate\Widget\Taglist
 			if(!is_numeric($owner))
 			{
 				$resource = $bo->resources[substr($owner, 0,1)];
-				if($resource['info'])
+				if($resource['info'] && !($info = $bo->resource_info($owner)))
 				{
-					$info = $bo->resource_info($owner);
+					continue;	// ignore that resource, we would get a PHP Fatal: Unsupported operand types
 				}
 			}
 			else if (!in_array($owner, array_keys($accounts)))
@@ -140,7 +140,7 @@ class calendar_owner_etemplate_widget extends Etemplate\Widget\Taglist
 
 		$bo = new calendar_bo();
 		$query = $_REQUEST['query'];
-		
+
 		// Arbitrarily limited to 50 / resource
 		$options = array('start' => 0, 'num_rows' => 50) +
 			array_diff_key($_REQUEST, array_flip(array('menuaction','query')));