diff --git a/ChangeLog b/ChangeLog
index 53282d1c1d3..60aa376f96d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -12,7 +12,8 @@ NEW: Module Reception (for a more accurate management of your receptions) moved
 WARNING:
 
 Following changes may create regressions for some external modules, but were necessary to make Dolibarr better:
-* Properties ->contactid has been renamed into ->contact_id
+* Properties ->contactid have been renamed into ->contact_id
+* Properties ->titre have been renamed into ->title 
 * Property $paiementid in API 'api_supplier_invoices.php' has been renamed into into $payment_mode_id (english)
 * The deprecated subsitution key __SIGNATURE__ has been removed. Replace with __USER_SIGNATURE__ if you used the old syntax in
   your email templates. 
diff --git a/htdocs/comm/mailing/advtargetemailing.php b/htdocs/comm/mailing/advtargetemailing.php
index 29b06819e9e..64e7df053ea 100644
--- a/htdocs/comm/mailing/advtargetemailing.php
+++ b/htdocs/comm/mailing/advtargetemailing.php
@@ -426,7 +426,7 @@ if ($object->fetch($id) >= 0) {
 	print $form->showrefnav($object, 'id', $linkback);
 	print '</td></tr>';
 
-	print '<tr><td>'.$langs->trans("MailTitle").'</td><td colspan="3">'.$object->titre.'</td></tr>';
+	print '<tr><td>'.$langs->trans("MailTitle").'</td><td colspan="3">'.$object->title.'</td></tr>';
 
 	print '<tr><td>'.$langs->trans("MailFrom").'</td><td colspan="3">'.dol_print_email($object->email_from, 0, 0, 0, 0, 1).'</td></tr>';
 
diff --git a/htdocs/comm/mailing/card.php b/htdocs/comm/mailing/card.php
index 78b9dea4bc6..02d779e5525 100644
--- a/htdocs/comm/mailing/card.php
+++ b/htdocs/comm/mailing/card.php
@@ -465,13 +465,13 @@ if (empty($reshook))
 		$object->email_from     = GETPOST("from");
 		$object->email_replyto  = GETPOST("replyto");
 		$object->email_errorsto = GETPOST("errorsto");
-		$object->titre          = GETPOST("titre");
+		$object->title          = GETPOST("title");
 		$object->sujet          = GETPOST("sujet");
 		$object->body           = GETPOST("bodyemail", 'restricthtml');
 		$object->bgcolor        = GETPOST("bgcolor");
 		$object->bgimage        = GETPOST("bgimage");
 
-		if (!$object->titre) {
+		if (!$object->title) {
 			$mesgs[] = $langs->trans("ErrorFieldRequired", $langs->transnoentities("MailTitle"));
 		}
 		if (!$object->sujet) {
@@ -496,16 +496,16 @@ if (empty($reshook))
 	}
 
 	// Action update description of emailing
-	if ($action == 'settitre' || $action == 'setemail_from' || $action == 'setreplyto' || $action == 'setemail_errorsto')
+	if ($action == 'settitle' || $action == 'setemail_from' || $action == 'setreplyto' || $action == 'setemail_errorsto')
 	{
 		$upload_dir = $conf->mailing->dir_output."/".get_exdir($object->id, 2, 0, 1, $object, 'mailing');
 
-		if ($action == 'settitre') $object->titre = trim(GETPOST('titre', 'alpha'));
+		if ($action == 'settitle') $object->title = trim(GETPOST('title', 'alpha'));
 		elseif ($action == 'setemail_from') $object->email_from = trim(GETPOST('email_from', 'alpha'));
 		elseif ($action == 'setemail_replyto') $object->email_replyto = trim(GETPOST('email_replyto', 'alpha'));
 		elseif ($action == 'setemail_errorsto') {
             $object->email_errorsto = trim(GETPOST('email_errorsto', 'alpha'));
-        } elseif ($action == 'settitre' && empty($object->titre)) {
+        } elseif ($action == 'settitle' && empty($object->title)) {
 			$mesg = $langs->trans("ErrorFieldRequired", $langs->transnoentities("MailTitle"));
 		} elseif ($action == 'setfrom' && empty($object->email_from)) {
 			$mesg = $langs->trans("ErrorFieldRequired", $langs->transnoentities("MailFrom"));
@@ -854,9 +854,9 @@ if ($action == 'create')
 
 			// Description
 			print '<tr><td class="titlefield">';
-			print $form->editfieldkey("MailTitle", 'titre', $object->titre, $object, $user->rights->mailing->creer && $object->statut < 3, 'string');
+			print $form->editfieldkey("MailTitle", 'title', $object->title, $object, $user->rights->mailing->creer && $object->statut < 3, 'string');
 			print '</td><td>';
-			print $form->editfieldval("MailTitle", 'titre', $object->titre, $object, $user->rights->mailing->creer && $object->statut < 3, 'string');
+			print $form->editfieldval("MailTitle", 'title', $object->title, $object, $user->rights->mailing->creer && $object->statut < 3, 'string');
 			print '</td></tr>';
 
 			// From
@@ -1144,7 +1144,7 @@ if ($action == 'create')
 			*/
 
 			// Topic
-			print '<tr><td class="titlefield">'.$langs->trans("MailTitle").'</td><td colspan="3">'.$object->titre.'</td></tr>';
+			print '<tr><td class="titlefield">'.$langs->trans("MailTitle").'</td><td colspan="3">'.$object->title.'</td></tr>';
 			// From
 			print '<tr><td class="titlefield">'.$langs->trans("MailFrom").'</td><td colspan="3">'.dol_print_email($object->email_from, 0, 0, 0, 0, 1).'</td></tr>';
 			// To
diff --git a/htdocs/comm/mailing/cibles.php b/htdocs/comm/mailing/cibles.php
index ef2f3cc772e..ff9bb98f639 100644
--- a/htdocs/comm/mailing/cibles.php
+++ b/htdocs/comm/mailing/cibles.php
@@ -237,7 +237,7 @@ if ($object->fetch($id) >= 0)
 
 	print '<table class="border centpercent tableforfield">';
 
-	print '<tr><td class="titlefield">'.$langs->trans("MailTitle").'</td><td colspan="3">'.$object->titre.'</td></tr>';
+	print '<tr><td class="titlefield">'.$langs->trans("MailTitle").'</td><td colspan="3">'.$object->title.'</td></tr>';
 
 	print '<tr><td>'.$langs->trans("MailFrom").'</td><td colspan="3">';
 	$emailarray = CMailFile::getArrayAddress($object->email_from);
diff --git a/htdocs/comm/mailing/class/mailing.class.php b/htdocs/comm/mailing/class/mailing.class.php
index 1bb4864876c..704d0892ab5 100644
--- a/htdocs/comm/mailing/class/mailing.class.php
+++ b/htdocs/comm/mailing/class/mailing.class.php
@@ -46,7 +46,7 @@ class Mailing extends CommonObject
 	 */
 	public $picto = 'email';
 
-	public $titre;
+	public $title;
 	public $sujet;
 	public $body;
 	public $nbemail;
@@ -115,7 +115,7 @@ class Mailing extends CommonObject
 
 		$this->db->begin();
 
-		$this->titre = trim($this->titre);
+		$this->title = trim($this->title);
 		$this->email_from = trim($this->email_from);
 
 		if (!$this->email_from)
@@ -130,9 +130,9 @@ class Mailing extends CommonObject
 		$sql .= " (date_creat, fk_user_creat, entity)";
 		$sql .= " VALUES ('".$this->db->idate($now)."', ".$user->id.", ".$conf->entity.")";
 
-		if (!$this->titre)
+		if (!$this->title)
 		{
-			$this->titre = $langs->trans("NoTitle");
+			$this->title = $langs->trans("NoTitle");
 		}
 
 		dol_syslog("Mailing::Create", LOG_DEBUG);
@@ -167,7 +167,7 @@ class Mailing extends CommonObject
 	public function update($user)
 	{
 		$sql = "UPDATE ".MAIN_DB_PREFIX."mailing ";
-		$sql .= " SET titre = '".$this->db->escape($this->titre)."'";
+		$sql .= " SET titre = '".$this->db->escape($this->title)."'";
 		$sql .= ", sujet = '".$this->db->escape($this->sujet)."'";
 		$sql .= ", body = '".$this->db->escape($this->body)."'";
 		$sql .= ", email_from = '".$this->db->escape($this->email_from)."'";
@@ -198,7 +198,7 @@ class Mailing extends CommonObject
 	{
 		global $conf;
 
-		$sql = "SELECT m.rowid, m.titre, m.sujet, m.body, m.bgcolor, m.bgimage";
+		$sql = "SELECT m.rowid, m.titre as title, m.sujet, m.body, m.bgcolor, m.bgimage";
 		$sql .= ", m.email_from, m.email_replyto, m.email_errorsto";
 		$sql .= ", m.statut, m.nbemail";
 		$sql .= ", m.fk_user_creat, m.fk_user_valid";
@@ -221,7 +221,7 @@ class Mailing extends CommonObject
 				$this->ref = $obj->rowid;
 				$this->statut = $obj->statut;
 				$this->nbemail = $obj->nbemail;
-				$this->titre = $obj->titre;
+				$this->title = $obj->title;
 
 				$this->sujet = $obj->sujet;
 				if (!empty($conf->global->FCKEDITOR_ENABLE_MAILING) && dol_textishtml(dol_html_entity_decode($obj->body, ENT_COMPAT | ENT_HTML401))) {
@@ -283,7 +283,7 @@ class Mailing extends CommonObject
 		$object->statut = 0;
 
 		// Clear fields
-		$object->titre = $langs->trans("CopyOf").' '.$object->titre.' '.dol_print_date(dol_now());
+		$object->title = $langs->trans("CopyOf").' '.$object->title.' '.dol_print_date(dol_now());
 
 		// If no option copy content
 		if (empty($option1))
diff --git a/htdocs/comm/mailing/index.php b/htdocs/comm/mailing/index.php
index cf439e4314b..ddcdaabf14e 100644
--- a/htdocs/comm/mailing/index.php
+++ b/htdocs/comm/mailing/index.php
@@ -182,7 +182,7 @@ if ($result) {
 
 	        print '<tr class="oddeven">';
 	        print '<td class="nowrap">'.$mailstatic->getNomUrl(1).'</td>';
-	        print '<td>'.dol_trunc($obj->titre, 38).'</td>';
+	        print '<td>'.dol_trunc($obj->title, 38).'</td>';
 	        print '<td class="center">'.dol_print_date($db->jdate($obj->date_creat), 'day').'</td>';
 	        print '<td class="center">'.($obj->nbemail ? $obj->nbemail : "0").'</td>';
 	        print '<td class="right">'.$mailstatic->LibStatut($obj->statut, 5).'</td>';
diff --git a/htdocs/comm/mailing/list.php b/htdocs/comm/mailing/list.php
index d22dd130507..525064942a6 100644
--- a/htdocs/comm/mailing/list.php
+++ b/htdocs/comm/mailing/list.php
@@ -238,7 +238,7 @@ if ($resql)
 		print $email->getNomUrl(1);
 		print '</td>';
 
-		print '<td>'.$obj->titre.'</td>';
+		print '<td>'.$obj->title.'</td>';
 		// Date creation
 
 		print '<td class="center">';
diff --git a/htdocs/compta/facture/card-rec.php b/htdocs/compta/facture/card-rec.php
index 113068c447c..3ab212a62bd 100644
--- a/htdocs/compta/facture/card-rec.php
+++ b/htdocs/compta/facture/card-rec.php
@@ -188,8 +188,8 @@ if (empty($reshook))
 
 		if (!$error)
 		{
-			$object->titre = GETPOST('titre', 'nohtml'); // deprecated
-			$object->title = GETPOST('titre', 'nohtml');
+			$object->titre = GETPOST('title', 'nohtml'); // deprecated
+			$object->title = GETPOST('title', 'nohtml');
 			$object->note_private = GETPOST('note_private', 'restricthtml');
             $object->note_public = GETPOST('note_public', 'restricthtml');
             $object->model_pdf = GETPOST('modelpdf', 'alpha');
diff --git a/htdocs/compta/facture/class/facture-rec.class.php b/htdocs/compta/facture/class/facture-rec.class.php
index c288251f56a..d1a6abcdec3 100644
--- a/htdocs/compta/facture/class/facture-rec.class.php
+++ b/htdocs/compta/facture/class/facture-rec.class.php
@@ -74,6 +74,11 @@ class FactureRec extends CommonInvoice
 	 */
 	protected $table_ref_field = 'titre';
 
+	/**
+	 * @var string The label of recurring invoice
+	 */
+	public $title;
+
 	public $number;
 	public $date;
 	public $remise;
diff --git a/htdocs/core/class/html.formprojet.class.php b/htdocs/core/class/html.formprojet.class.php
index 6fad72862c7..058706edce7 100644
--- a/htdocs/core/class/html.formprojet.class.php
+++ b/htdocs/core/class/html.formprojet.class.php
@@ -170,7 +170,7 @@ class FormProjets
 			if (empty($conf->global->PROJECT_ALLOW_TO_LINK_FROM_OTHER_COMPANY))  $sql .= " AND (p.fk_soc=".$socid." OR p.fk_soc IS NULL)";
 			elseif ($conf->global->PROJECT_ALLOW_TO_LINK_FROM_OTHER_COMPANY != 'all')    // PROJECT_ALLOW_TO_LINK_FROM_OTHER_COMPANY is 'all' or a list of ids separated by coma.
 			{
-				$sql .= " AND (p.fk_soc IN (".$socid.", ".$conf->global->PROJECT_ALLOW_TO_LINK_FROM_OTHER_COMPANY.") OR p.fk_soc IS NULL)";
+				$sql .= " AND (p.fk_soc IN (".$socid.", ".((int) $conf->global->PROJECT_ALLOW_TO_LINK_FROM_OTHER_COMPANY).") OR p.fk_soc IS NULL)";
 			}
 		}
 		if (!empty($filterkey)) $sql .= natural_search(array('p.title', 'p.ref'), $filterkey);
diff --git a/htdocs/fichinter/class/fichinterrec.class.php b/htdocs/fichinter/class/fichinterrec.class.php
index 818c1763786..c9e689ffd4c 100644
--- a/htdocs/fichinter/class/fichinterrec.class.php
+++ b/htdocs/fichinter/class/fichinterrec.class.php
@@ -250,12 +250,11 @@ class FichinterRec extends Fichinter
 	 */
 	public function fetch($rowid = 0, $ref = '', $ref_ext = '')
 	{
-		$sql = 'SELECT f.titre, f.fk_soc';
+		$sql = 'SELECT f.titre as title, f.fk_soc';
 		$sql .= ', f.datec, f.duree, f.fk_projet, f.fk_contrat, f.description';
 		$sql .= ', f.note_private, f.note_public, f.fk_user_author';
 		$sql .= ', f.frequency, f.unit_frequency, f.date_when, f.date_last_gen, f.nb_gen_done, f.nb_gen_max, f.auto_validate';
 		$sql .= ', f.note_private, f.note_public, f.fk_user_author';
-
 		$sql .= ' FROM '.MAIN_DB_PREFIX.'fichinter_rec as f';
 		if ($rowid > 0) $sql .= ' WHERE f.rowid='.$rowid;
 		elseif ($ref) $sql .= " WHERE f.titre='".$this->db->escape($ref)."'";
@@ -268,8 +267,9 @@ class FichinterRec extends Fichinter
 				$obj = $this->db->fetch_object($result);
 
 				$this->id = $rowid;
-				$this->titre				= $obj->titre;
-				$this->ref = $obj->titre;
+				$this->titre				= $obj->title;
+				$this->title				= $obj->title;
+				$this->ref = $obj->title;
 				$this->description = $obj->description;
 				$this->datec				= $obj->datec;
 				$this->duration = $obj->duree;
diff --git a/htdocs/projet/ajax/projects.php b/htdocs/projet/ajax/projects.php
index cbc223f8525..3491ae1e166 100644
--- a/htdocs/projet/ajax/projects.php
+++ b/htdocs/projet/ajax/projects.php
@@ -1,8 +1,8 @@
 <?php
 /* Copyright (C) 2006      Andre Cianfarani     <acianfa@free.fr>
  * Copyright (C) 2005-2013 Regis Houssin        <regis.houssin@inodbox.com>
- * Copyright (C) 2007-2011 Laurent Destailleur  <eldy@users.sourceforge.net>
- * Copyright (C) 2014-2015 Marcos García       <marcosgdf@gmail.com>
+ * Copyright (C) 2007-2020 Laurent Destailleur  <eldy@users.sourceforge.net>
+ * Copyright (C) 2014-2015 Marcos García        <marcosgdf@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by