diff --git a/htdocs/compta/facture/class/api_invoices.class.php b/htdocs/compta/facture/class/api_invoices.class.php
index 6fe44440ff5..d6103f4085c 100644
--- a/htdocs/compta/facture/class/api_invoices.class.php
+++ b/htdocs/compta/facture/class/api_invoices.class.php
@@ -72,10 +72,10 @@ class Invoices extends DolibarrApi
 		}
 
 		// Get payment details
-		$this->invoice->totalpaye = $this->invoice->getSommePaiement();
+		$this->invoice->totalpaid = $this->invoice->getSommePaiement();
 		$this->invoice->totalcreditnotes = $this->invoice->getSumCreditNotesUsed();
 		$this->invoice->totaldeposits = $this->invoice->getSumDepositsUsed();
-		$this->invoice->resteapayer = price2num($this->invoice->total_ttc - $this->invoice->totalpaye - $this->invoice->totalcreditnotes - $this->invoice->totaldeposits, 'MT');
+		$this->invoice->remaintopay = price2num($this->invoice->total_ttc - $this->invoice->totalpaid - $this->invoice->totalcreditnotes - $this->invoice->totaldeposits, 'MT');
 
 		if (! DolibarrApi::_checkAccessToResource('facture',$this->invoice->id)) {
 			throw new RestException(401, 'Access not allowed for login '.DolibarrApiAccess::$user->login);