diff --git a/libraries/classes/Plugins/Export/Helpers/Pdf.php b/libraries/classes/Plugins/Export/Helpers/Pdf.php
index 1ec18c2365..8bac35c212 100644
--- a/libraries/classes/Plugins/Export/Helpers/Pdf.php
+++ b/libraries/classes/Plugins/Export/Helpers/Pdf.php
@@ -641,7 +641,7 @@ class Pdf extends PdfLib
             foreach ($data as $col => $txt) {
                 $this->page = $currpage;
                 $this->setXY($l, $h);
-                if ($this->tablewidths[$col] > 0) {
+                if (isset($this->tablewidths[$col]) && $this->tablewidths[$col] > 0) {
                     $this->MultiCell(
                         $this->tablewidths[$col],
                         // phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps