diff --git a/htdocs/core/class/commondocgenerator.class.php b/htdocs/core/class/commondocgenerator.class.php
index a8f07e071dd..64e4d690308 100644
--- a/htdocs/core/class/commondocgenerator.class.php
+++ b/htdocs/core/class/commondocgenerator.class.php
@@ -1237,7 +1237,7 @@ abstract class CommonDocGenerator
 			$curentCellPaddinds = $pdf->getCellPaddings();
 			// set cell padding with column content definition
 			$pdf->setCellPaddings(isset($colDef['content']['padding'][3]) ? $colDef['content']['padding'][3] : 0, isset($colDef['content']['padding'][0]) ? $colDef['content']['padding'][0] : 0, isset($colDef['content']['padding'][1]) ? $colDef['content']['padding'][1] : 0, isset($colDef['content']['padding'][2]) ? $colDef['content']['padding'][2] : 0);
-			$pdf->writeHTMLCell($colDef['width'], 2, $colDef['xStartPos'], $curY, $columnText, 0, 1, 0, true, $colDef['content']['align']);
+			$pdf->writeHTMLCell($colDef['width'], 2, isset($colDef['xStartPos']) ? $colDef['xStartPos'] : 0, $curY, $columnText, 0, 1, 0, true, $colDef['content']['align']);
 
 			// restore cell padding
 			$pdf->setCellPaddings($curentCellPaddinds['L'], $curentCellPaddinds['T'], $curentCellPaddinds['R'], $curentCellPaddinds['B']);