diff --git a/htdocs/comm/propal.php b/htdocs/comm/propal.php
index bcfaa747cab4d3d20886030ac6bb0099bb46a88e..fd6794c3d444dfcc87194e910118df516161c3e2 100644
--- a/htdocs/comm/propal.php
+++ b/htdocs/comm/propal.php
@@ -2223,7 +2223,7 @@ if ($action == 'create')
 					}
 
 					$arrayofinvoiceforpropal = $object->getInvoiceArrayList();
-					if ((is_array($arrayofinvoiceforpropal) && count($arrayofinvoiceforpropal) > 0) || ! empty($conf->global->WORKFLOW_PROPAL_CAN_CLASSIFIED_BILLED_WITHOUT_INVOICES))
+					if ((is_array($arrayofinvoiceforpropal) && count($arrayofinvoiceforpropal) > 0) || empty($conf->global->WORKFLOW_PROPAL_NEED_INVOICE_TO_BE_CLASSIFIED_BILLED))
 					{
 						print '<div class="inline-block divButAction"><a class="butAction" href="' . $_SERVER["PHP_SELF"] . '?id=' . $object->id . '&amp;action=classifybilled&amp;socid=' . $object->socid . '">' . $langs->trans("ClassifyBilled") . '</a></div>';
 					}
diff --git a/htdocs/langs/en_US/workflow.lang b/htdocs/langs/en_US/workflow.lang
index 7414fcb7e626d40f5eaddf8a255ba819fb3c5165..14be1a6ade63833f25caf0421cfa93ac4ea447be 100644
--- a/htdocs/langs/en_US/workflow.lang
+++ b/htdocs/langs/en_US/workflow.lang
@@ -3,9 +3,9 @@ WorkflowSetup=Workflow module setup
 WorkflowDesc=This module is designed to modify the behaviour of automatic actions into application. By default, workflow is open (you can do things in the order you want). You can activate the automatic actions you are interested in.
 ThereIsNoWorkflowToModify=There is no workflow modifications available with the activated modules.
 descWORKFLOW_PROPAL_AUTOCREATE_ORDER=Automatically create a customer order after a commercial proposal is signed
-descWORKFLOW_PROPAL_AUTOCREATE_INVOICEAutomatically create a customer invoice after a commercial proposal is signed
-descWORKFLOW_CONTRACT_AUTOCREATE_INVOICEAutomatically create a customer invoice after a contract is validated
-descWORKFLOW_ORDER_AUTOCREATE_INVOICEAutomatically create a customer invoice after a customer order is closed
+descWORKFLOW_PROPAL_AUTOCREATE_INVOICE=Automatically create a customer invoice after a commercial proposal is signed
+descWORKFLOW_CONTRACT_AUTOCREATE_INVOICE=Automatically create a customer invoice after a contract is validated
+descWORKFLOW_ORDER_AUTOCREATE_INVOICE=Automatically create a customer invoice after a customer order is closed
 descWORKFLOW_ORDER_CLASSIFY_BILLED_PROPAL=Classify linked source proposal to billed when customer order is set to paid
 descWORKFLOW_INVOICE_CLASSIFY_BILLED_ORDER=Classify linked source customer order(s) to billed when customer invoice is set to paid
 descWORKFLOW_INVOICE_AMOUNT_CLASSIFY_BILLED_ORDER=Classify linked source customer order(s) to billed when customer invoice is validated