diff --git a/htdocs/includes/tcpdi/tcpdi.php b/htdocs/includes/tcpdi/tcpdi.php
index 48fdd8198f5..999ff99ea5b 100644
--- a/htdocs/includes/tcpdi/tcpdi.php
+++ b/htdocs/includes/tcpdi/tcpdi.php
@@ -580,7 +580,7 @@ class TCPDI extends FPDF_TPL {
      * close all files opened by parsers
      */
     function _closeParsers() {
-        if ($this->state > 2 && count($this->parsers) > 0) {
+        if ($this->state > 2 && is_array($this->parsers) && count($this->parsers) > 0) {
           	$this->cleanUp();
             return true;
         }