diff --git a/htdocs/commande/fiche.php b/htdocs/commande/fiche.php
index 43fe619bd1a..c1a6d38a58a 100644
--- a/htdocs/commande/fiche.php
+++ b/htdocs/commande/fiche.php
@@ -1548,7 +1548,7 @@ if ($action == 'create' && $user->rights->commande->creer)
 			$demand_reason_id	= (!empty($objectsrc->demand_reason_id)?$objectsrc->demand_reason_id:(!empty($soc->demand_reason_id)?$soc->demand_reason_id:0));
 			$remise_percent		= (!empty($objectsrc->remise_percent)?$objectsrc->remise_percent:(!empty($soc->remise_percent)?$soc->remise_percent:0));
 			$remise_absolue		= (!empty($objectsrc->remise_absolue)?$objectsrc->remise_absolue:(!empty($soc->remise_absolue)?$soc->remise_absolue:0));
-			$dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0;
+			$dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:'';
 
 			$datedelivery		= (!empty($objectsrc->date_livraison)?$objectsrc->date_livraison:'');
 
@@ -1567,7 +1567,7 @@ if ($action == 'create' && $user->rights->commande->creer)
 		$demand_reason_id   = $soc->demand_reason_id;
 		$remise_percent     = $soc->remise_percent;
 		$remise_absolue     = 0;
-		$dateinvoice        = empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0;
+		$dateinvoice        = empty($conf->global->MAIN_AUTOFILL_DATE)?-1:'';
 		$projectid          = 0;
 	}
 	$absolute_discount=$soc->getAvailableDiscounts();
@@ -1643,7 +1643,7 @@ if ($action == 'create' && $user->rights->commande->creer)
 	if (empty($datedelivery))
 	{
 		if (! empty($conf->global->DATE_LIVRAISON_WEEK_DELAY)) $datedelivery = time() + ((7*$conf->global->DATE_LIVRAISON_WEEK_DELAY) * 24 * 60 * 60);
-		else $datedelivery=empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0;
+		else $datedelivery=empty($conf->global->MAIN_AUTOFILL_DATE)?-1:'';
 	}
 	$form->select_date($datedelivery,'liv_','','','',"crea_commande",1,1);
 	print "</td></tr>";
diff --git a/htdocs/commande/orderstoinvoice.php b/htdocs/commande/orderstoinvoice.php
index 7b79a16bec1..5ea4e5b72cb 100644
--- a/htdocs/commande/orderstoinvoice.php
+++ b/htdocs/commande/orderstoinvoice.php
@@ -373,7 +373,7 @@ if ($action == 'create' && empty($mesgs))
 		$remise_percent 	= $soc->remise_percent;
 	}
 	$remise_absolue 	= 0;
-	$dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0;
+	$dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:'';
 
 	$absolute_discount=$soc->getAvailableDiscounts();
 	print '<form name="add" action="'.$_SERVER["PHP_SELF"].'" method="POST">';
diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 29f4e61c7c7..d685f9ad1ed 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -2082,7 +2082,7 @@ if ($action == 'create')
 			$mode_reglement_id 	= (! empty($objectsrc->mode_reglement_id)?$objectsrc->mode_reglement_id:(! empty($soc->mode_reglement_id)?$soc->mode_reglement_id:0));
 			$remise_percent 	= (! empty($objectsrc->remise_percent)?$objectsrc->remise_percent:(! empty($soc->remise_percent)?$soc->remise_percent:0));
 			$remise_absolue 	= (! empty($objectsrc->remise_absolue)?$objectsrc->remise_absolue:(! empty($soc->remise_absolue)?$soc->remise_absolue:0));
-			$dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0;
+			$dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:'';
 
 			//Replicate extrafields
 			$objectsrc->fetch_optionals($originid);
@@ -2095,7 +2095,7 @@ if ($action == 'create')
 		$mode_reglement_id 	= $soc->mode_reglement_id;
 		$remise_percent 	= $soc->remise_percent;
 		$remise_absolue 	= 0;
-		$dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0;
+		$dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:'';
 	}
 	$absolute_discount=$soc->getAvailableDiscounts();
 
diff --git a/htdocs/compta/paiement.php b/htdocs/compta/paiement.php
index 3b9d257314e..7a149ed80fd 100644
--- a/htdocs/compta/paiement.php
+++ b/htdocs/compta/paiement.php
@@ -397,7 +397,7 @@ if ($action == 'create' || $action == 'confirm_paiement' || $action == 'add_paie
         // Date payment
         print '<tr><td><span class="fieldrequired">'.$langs->trans('Date').'</span></td><td>';
         $datepayment = dol_mktime(12, 0, 0, $_POST['remonth'], $_POST['reday'], $_POST['reyear']);
-        $datepayment= ($datepayment == '' ? (empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0) : $datepayment);
+        $datepayment= ($datepayment == '' ? (empty($conf->global->MAIN_AUTOFILL_DATE)?-1:'') : $datepayment);
         $form->select_date($datepayment,'','','',0,"add_paiement",1,1);
         print '</td>';
         print '<td>'.$langs->trans('Comments').'</td></tr>';
diff --git a/htdocs/fourn/facture/fiche.php b/htdocs/fourn/facture/fiche.php
index 402be19f17a..966ab630ade 100644
--- a/htdocs/fourn/facture/fiche.php
+++ b/htdocs/fourn/facture/fiche.php
@@ -1122,10 +1122,10 @@ if ($action == 'create')
             $mode_reglement_id 	= (!empty($objectsrc->mode_reglement_id)?$objectsrc->mode_reglement_id:(!empty($soc->mode_reglement_supplier_id)?$soc->mode_reglement_supplier_id:0));
             $remise_percent 	= (!empty($objectsrc->remise_percent)?$objectsrc->remise_percent:(!empty($soc->remise_percent)?$soc->remise_percent:0));
             $remise_absolue 	= (!empty($objectsrc->remise_absolue)?$objectsrc->remise_absolue:(!empty($soc->remise_absolue)?$soc->remise_absolue:0));
-            $dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0;
+            $dateinvoice		= empty($conf->global->MAIN_AUTOFILL_DATE)?-1:'';
 
             $datetmp=dol_mktime(12,0,0,$_POST['remonth'],$_POST['reday'],$_POST['reyear']);
-            $dateinvoice=($datetmp==''?(empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0):$datetmp);
+            $dateinvoice=($datetmp==''?(empty($conf->global->MAIN_AUTOFILL_DATE)?-1:''):$datetmp);
             $datetmp=dol_mktime(12,0,0,$_POST['echmonth'],$_POST['echday'],$_POST['echyear']);
             $datedue=($datetmp==''?-1:$datetmp);
         }
@@ -1135,7 +1135,7 @@ if ($action == 'create')
 		$cond_reglement_id 	= $societe->cond_reglement_supplier_id;
 		$mode_reglement_id 	= $societe->mode_reglement_supplier_id;
         $datetmp=dol_mktime(12,0,0,$_POST['remonth'],$_POST['reday'],$_POST['reyear']);
-        $dateinvoice=($datetmp==''?(empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0):$datetmp);
+        $dateinvoice=($datetmp==''?(empty($conf->global->MAIN_AUTOFILL_DATE)?-1:''):$datetmp);
         $datetmp=dol_mktime(12,0,0,$_POST['echmonth'],$_POST['echday'],$_POST['echyear']);
         $datedue=($datetmp==''?-1:$datetmp);
     }
diff --git a/htdocs/fourn/facture/paiement.php b/htdocs/fourn/facture/paiement.php
index 352c3150c52..6f8c3bc1920 100644
--- a/htdocs/fourn/facture/paiement.php
+++ b/htdocs/fourn/facture/paiement.php
@@ -191,7 +191,7 @@ if ($action == 'create' || $action == 'add_paiement')
     $object->fetch($facid);
 
     $datefacture=dol_mktime(12, 0, 0, GETPOST('remonth'), GETPOST('reday'), GETPOST('reyear'));
-    $dateinvoice=($datefacture==''?(empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0):$datefacture);
+    $dateinvoice=($datefacture==''?(empty($conf->global->MAIN_AUTOFILL_DATE)?-1:''):$datefacture);
 
     $sql = 'SELECT s.nom, s.rowid as socid,';
     $sql.= ' f.rowid, f.ref, f.ref_supplier, f.amount, f.total_ttc as total';