diff --git a/functions.php b/functions.php
index 2523e55..1563219 100644
--- a/functions.php
+++ b/functions.php
@@ -821,7 +821,7 @@ function handle_pdf_download()
                 $pdf->Ln(10);
                 $pdf->SetFont('helvetica', '', 12);
                 $content = apply_filters('the_content', $post->post_content);
-                $pdf->writeHTML(preprocess_mathjax_content($content));
+                $pdf->writeHTML($content);
 
                 // Output PDF document
                 $pdf->Output(sanitize_title($post->post_title) . '.pdf', 'D');