diff --git a/htdocs/webservices/server_invoice.php b/htdocs/webservices/server_invoice.php
index 15db912ff47..7397b8ca2a6 100644
--- a/htdocs/webservices/server_invoice.php
+++ b/htdocs/webservices/server_invoice.php
@@ -777,12 +777,11 @@ function updateInvoice($authentication, $invoice)
 						$object->generateDocument($object->model_pdf, $outputlangs);
 					}
 				}
-				if ($invoice['status'] == Facture::STATUS_CLOSED)
-				{
-					$result = $object->set_paid($fuser, $invoice->close_code, $invoice->close_note);
+				if ($invoice['status'] == Facture::STATUS_CLOSED) {
+					$result = $object->set_paid($fuser, $invoice['close_code'], $invoice['close_note']);
 				}
 				if ($invoice['status'] == Facture::STATUS_ABANDONED)
-					$result = $object->set_canceled($fuser, $invoice->close_code, $invoice->close_note);
+					$result = $object->set_canceled($fuser, $invoice['close_code'], $invoice['close_note']);
 			}
 		}