diff --git a/api/src/Vfs/Sqlfs/StreamWrapper.php b/api/src/Vfs/Sqlfs/StreamWrapper.php
index 96a1ee205e..8cb897f917 100644
--- a/api/src/Vfs/Sqlfs/StreamWrapper.php
+++ b/api/src/Vfs/Sqlfs/StreamWrapper.php
@@ -1906,7 +1906,7 @@ class StreamWrapper extends Api\Db\Pdo implements Vfs\StreamWrapperIface
 		{
 			$props = $props[$row['fs_id']] ? $props[$row['fs_id']] : array();	// return empty array for no props
 		}
-		elseif ($props && isset($stat) && ($id2path = self::id2path(array_keys($props))))	// need to map fs_id's to pathes
+		elseif ($props && isset($stat) && is_array($id2path = self::id2path(array_keys($props))))	// need to map fs_id's to pathes
 		{
 			foreach($id2path as $id => $path)
 			{