diff --git a/htdocs/admin/contract.php b/htdocs/admin/contract.php
index 26212242049..6cc0144471c 100644
--- a/htdocs/admin/contract.php
+++ b/htdocs/admin/contract.php
@@ -128,6 +128,8 @@ if ($action == 'updateMask') {
 	if ($ret > 0) {
 		$ret = addDocumentModel($value, $type, $label, $scandir);
 	}
+} elseif ($action == 'unsetdoc') {
+	dolibarr_del_const($db, "CONTRACT_ADDON_PDF", $conf->entity);
 } elseif ($action == 'setmod') {
 	// TODO Verifier si module numerotation choisi peut etre active
 	// par appel methode canBeActivated
@@ -378,9 +380,9 @@ foreach ($dirmodels as $reldir) {
 								// Defaut
 								print '<td class="center">';
 								if ($conf->global->CONTRACT_ADDON_PDF == $name) {
-									print img_picto($langs->trans("Default"), 'on');
+									print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=unsetdoc&token='.newToken().'&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'&type=order_supplier" alt="'.$langs->trans("Disable").'">'.img_picto($langs->trans("Enabled"), 'on').'</a>';
 								} else {
-									print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=setdoc&token='.newToken().'&value='.urlencode($name).'&amp;scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'" alt="'.$langs->trans("Default").'">'.img_picto($langs->trans("Disabled"), 'off').'</a>';
+									print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=setdoc&token='.newToken().'&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'" alt="'.$langs->trans("Default").'">'.img_picto($langs->trans("Disabled"), 'off').'</a>';
 								}
 								print '</td>';
 
diff --git a/htdocs/admin/supplier_order.php b/htdocs/admin/supplier_order.php
index b5114314eef..d2fa38c9469 100644
--- a/htdocs/admin/supplier_order.php
+++ b/htdocs/admin/supplier_order.php
@@ -388,7 +388,7 @@ foreach ($dirmodels as $reldir) {
 					if (in_array($name, $def)) {
 						print '<td class="center">'."\n";
 						if ($conf->global->COMMANDE_SUPPLIER_ADDON_PDF != "$name") {
-							print '<a href="'.$_SERVER["PHP_SELF"].'?action=del&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'&type=order_supplier">';
+							print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=del&token='.newToken().'&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'&type=order_supplier">';
 							print img_picto($langs->trans("Enabled"), 'switch_on');
 							print '</a>';
 						} else {
@@ -397,17 +397,16 @@ foreach ($dirmodels as $reldir) {
 						print "</td>";
 					} else {
 						print '<td class="center">'."\n";
-						print '<a href="'.$_SERVER["PHP_SELF"].'?action=set&token='.newToken().'&value='.urlencode($name).'&amp;scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'&type=order_supplier">'.img_picto($langs->trans("Disabled"), 'switch_off').'</a>';
+						print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=set&token='.newToken().'&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'&type=order_supplier">'.img_picto($langs->trans("Disabled"), 'switch_off').'</a>';
 						print "</td>";
 					}
 
 					// Default
 					print '<td class="center">';
 					if ($conf->global->COMMANDE_SUPPLIER_ADDON_PDF == "$name") {
-						//                      print img_picto($langs->trans("Default"), 'on');
-						print '<a href="'.$_SERVER["PHP_SELF"].'?action=unsetdoc&amp;token='.newToken().'&amp;value='.$name.'&amp;scan_dir='.$module->scandir.'&amp;label='.urlencode($module->name).'&amp;type=order_supplier"" alt="'.$langs->trans("Disable").'">'.img_picto($langs->trans("Enabled"), 'on').'</a>';
+						print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=unsetdoc&token='.newToken().'&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'&type=order_supplier" alt="'.$langs->trans("Disable").'">'.img_picto($langs->trans("Enabled"), 'on').'</a>';
 					} else {
-						print '<a href="'.$_SERVER["PHP_SELF"].'?action=setdoc&token='.newToken().'&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'&type=order_supplier" alt="'.$langs->trans("Default").'">'.img_picto($langs->trans("Disabled"), 'off').'</a>';
+						print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=setdoc&token='.newToken().'&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'&type=order_supplier" alt="'.$langs->trans("Default").'">'.img_picto($langs->trans("Disabled"), 'off').'</a>';
 					}
 					print '</td>';
 
@@ -425,7 +424,7 @@ foreach ($dirmodels as $reldir) {
 					print $form->textwithpicto('', $htmltooltip, 1, 0);
 					print '</td>';
 					print '<td class="center">';
-					print '<a href="'.$_SERVER["PHP_SELF"].'?action=specimen&amp;module='.$name.'">'.img_object($langs->trans("Preview"), 'pdf').'</a>';
+					print '<a href="'.$_SERVER["PHP_SELF"].'?action=specimen&module='.urlencode($name).'">'.img_object($langs->trans("Preview"), 'pdf').'</a>';
 					print '</td>';
 
 					print "</tr>\n";
diff --git a/htdocs/core/db/DoliDB.class.php b/htdocs/core/db/DoliDB.class.php
index a3367841481..c975fb5d683 100644
--- a/htdocs/core/db/DoliDB.class.php
+++ b/htdocs/core/db/DoliDB.class.php
@@ -150,15 +150,16 @@ abstract class DoliDB implements Database
 	/**
 	 * Start transaction
 	 *
-	 * @return	    int         1 if transaction successfuly opened or already opened, 0 if error
+	 * @param		string	$textinlog		Add a small text into log. '' by default.
+	 * @return	    int         			1 if transaction successfuly opened or already opened, 0 if error
 	 */
-	public function begin()
+	public function begin($textinlog = '')
 	{
 		if (!$this->transaction_opened) {
 			$ret = $this->query("BEGIN");
 			if ($ret) {
 				$this->transaction_opened++;
-				dol_syslog("BEGIN Transaction", LOG_DEBUG);
+				dol_syslog("BEGIN Transaction".($textinlog ? ' '.$textinlog : ''), LOG_DEBUG);
 				dol_syslog('', 0, 1);
 			}
 			return $ret;