diff --git a/include/class.pdf.php b/include/class.pdf.php
index df85cd2ef4a06abd4eb1fe247b7fce902ff5c058..de5529438ba4c4f3b186a3e2c1d769f263a5285e 100644
--- a/include/class.pdf.php
+++ b/include/class.pdf.php
@@ -108,7 +108,7 @@ class Task2PDF extends mPDFWithLocalImages {
         $this->task = $task;
         $this->options = $options;
 
-        parent::__construct('', $this->options['psize']);
+        parent::__construct(['format' => $this->options['psize']]);
         $this->_print();
     }