diff --git a/ChangeLog b/ChangeLog
index ab1fe32aa8f..4618529b009 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -28,6 +28,7 @@ For users:
 - New: Script email_unpaid_invoices_to_representative accepts now a parameter test
   and a delay.
 - New: Can define a different clicktodial setup per user.
+- New: Add option INVOICE_CAN_NEVER_BE_REMOVED.
 - First change to prepare feature click to print for PDF.
   
 For translators:
diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index 5c78415d686..a24b21c51a8 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -2601,7 +2601,7 @@ class Facture extends CommonInvoice
         global $conf;
 
         if (! empty($conf->global->INVOICE_CAN_ALWAYS_BE_REMOVED)) return 1;
-        if (! empty($conf->global->INVOICE_CAN_NEVER_BE_REMOVED))  return 1;
+        if (! empty($conf->global->INVOICE_CAN_NEVER_BE_REMOVED))  return 0;
 
         // on verifie si la facture est en numerotation provisoire
         $facref = substr($this->ref, 1, 4);