diff --git a/lib/Command/SharesFiles.php b/lib/Command/SharesFiles.php
index f83a27bad..efcc49aa8 100644
--- a/lib/Command/SharesFiles.php
+++ b/lib/Command/SharesFiles.php
@@ -215,10 +215,10 @@ private function displayShares(
 			];
 
 			if (!$filterRecipient) {
+				$def = ($recipient->hasBasedOn()) ? Circle::$DEF_SOURCE[$recipient->getBasedOn()->getSource()] : 'undef';
 				$row = array_merge(
 					$row, [
-						$sharedTo . ' (' . $recipient->getSingleId() . ', '
-						. Circle::$DEF_SOURCE[$recipient->getBasedOn()->getSource()] . ')',
+						$sharedTo . ' (' . $recipient->getSingleId() . ', ' . $def . ')',
 						(($share->getChildId() > 0) ? $share->getChildFileTarget(
 						) : $share->getFileTarget()),
 					]