diff --git a/api/src/Vfs/Sqlfs/StreamWrapper.php b/api/src/Vfs/Sqlfs/StreamWrapper.php
index 2c2ea5c747..418530573e 100644
--- a/api/src/Vfs/Sqlfs/StreamWrapper.php
+++ b/api/src/Vfs/Sqlfs/StreamWrapper.php
@@ -1673,6 +1673,7 @@ GROUP BY A.fs_id';
 		{
 			$query = '/* '.__METHOD__.': '.__LINE__.' */ '.$query;
 		}
+		self::connection();
 		$stmt = self::$pdo->prepare($query);
 
 		$stmt->execute(array($fs_id));