diff --git a/htdocs/admin/pdf.php b/htdocs/admin/pdf.php
index be45a2101f5..a245c9338c9 100644
--- a/htdocs/admin/pdf.php
+++ b/htdocs/admin/pdf.php
@@ -165,6 +165,10 @@ if ($action == 'update') {
 		dolibarr_set_const($db, "PDF_SHOW_LINK_TO_ONLINE_PAYMENT", GETPOST('PDF_SHOW_LINK_TO_ONLINE_PAYMENT', 'alpha'), 'chaine', 0, '', $conf->entity);
 	}
 
+	if (GETPOSTISSET('PDF_USE_1A')) {
+		dolibarr_set_const($db, "PDF_USE_1A", GETPOST('PDF_USE_1A', 'alpha'), 'chaine', 0, '', $conf->entity);
+	}
+
 	setEventMessages($langs->trans("SetupSaved"), null, 'mesgs');
 
 	header("Location: ".$_SERVER["PHP_SELF"]."?mainmenu=home&leftmenu=setup");
@@ -534,6 +538,14 @@ if ($conf->use_javascript_ajax) {
 }
 print '</td></tr>';
 
+print '<tr class="oddeven"><td>'.$langs->trans("PDF_USE_1A").'</td><td>';
+if ($conf->use_javascript_ajax) {
+	print ajax_constantonoff('PDF_USE_1A');
+} else {
+	print $form->selectyesno('PDF_USE_1A', (!empty($conf->global->PDF_USE_1A)) ? $conf->global->PDF_USE_1A : 0, 1);
+}
+print '</td></tr>';
+
 print '</table>';
 print '</div>';
 
diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index def603e653e..81034e4aacd 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -2194,3 +2194,4 @@ LanguageAndPresentation=Language and presentation
 SkinAndColors=Skin and colors
 IfYouUseASecondTaxYouMustSetYouUseTheMainTax=If you want to use a second tax, you must enable also the first sales tax
 IfYouUseAThirdTaxYouMustSetYouUseTheMainTax=If you want to use a third tax, you must enable also the first sales tax
+PDF_USE_1A=Generate PDF with PDF/A- 1b format