diff --git a/htdocs/fichinter/class/fichinter.class.php b/htdocs/fichinter/class/fichinter.class.php
index c60d2c9eac4..6aaf29c7ac2 100644
--- a/htdocs/fichinter/class/fichinter.class.php
+++ b/htdocs/fichinter/class/fichinter.class.php
@@ -1,6 +1,6 @@
 <?php
 /* Copyright (C) 2002-2003 Rodolphe Quiedeville <rodolphe@quiedeville.org>
- * Copyright (C) 2004-2010 Laurent Destailleur  <eldy@users.sourceforge.net>
+ * Copyright (C) 2004-2014 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2005-2012 Regis Houssin        <regis.houssin@capnetworks.com>
  * Copyright (C) 2011-2013 Juanjo Menent        <jmenent@2byte.es>
  *
@@ -28,7 +28,7 @@ require_once DOL_DOCUMENT_ROOT .'/core/class/commonobjectline.class.php';
 
 
 /**
- *	Classe des gestion des fiches interventions
+ *	Class to manage interventions
  */
 class Fichinter extends CommonObject
 {
diff --git a/htdocs/fichinter/fiche.php b/htdocs/fichinter/fiche.php
index 889e584d99a..edd5372471e 100644
--- a/htdocs/fichinter/fiche.php
+++ b/htdocs/fichinter/fiche.php
@@ -1682,11 +1682,11 @@ else if ($id > 0 || ! empty($ref))
 				{
 					if ($object->statut != 2)
 					{
-						print '<div class="inline-block divButAction"><a class="butAction" href="'.$_SERVER["PHP_SELF"].'?id='.$object->id.'&amp;action=classifybilled">'.$langs->trans("ClassifyBilled").'</a></div>';
+						print '<div class="inline-block divButAction"><a class="butAction" href="'.$_SERVER["PHP_SELF"].'?id='.$object->id.'&amp;action=classifybilled">'.$langs->trans("InterventionClassifyBilled").'</a></div>';
 					}
 					else
 					{
-						print '<div class="inline-block divButAction"><a class="butAction" href="'.$_SERVER["PHP_SELF"].'?id='.$object->id.'&amp;action=classifyunbilled">'.$langs->trans("ClassifyUnBilled").'</a></div>';
+						print '<div class="inline-block divButAction"><a class="butAction" href="'.$_SERVER["PHP_SELF"].'?id='.$object->id.'&amp;action=classifyunbilled">'.$langs->trans("InterventionClassifyUnBilled").'</a></div>';
 					}
 				}
 			}
diff --git a/htdocs/langs/en_US/interventions.lang b/htdocs/langs/en_US/interventions.lang
index 266ce059d8b..17641a0ab3e 100644
--- a/htdocs/langs/en_US/interventions.lang
+++ b/htdocs/langs/en_US/interventions.lang
@@ -24,8 +24,8 @@ NameAndSignatureOfInternalContact=Name and signature of intervening :
 NameAndSignatureOfExternalContact=Name and signature of customer :
 DocumentModelStandard=Standard document model for interventions
 InterventionCardsAndInterventionLines=Interventions and lines of interventions
-ClassifyBilled=Classify "Billed"
-ClassifyUnBilled=Classify "Unbilled"
+InterventionClassifyBilled=Classify "Billed"
+InterventionClassifyUnBilled=Classify "Unbilled"
 StatusInterInvoiced=Billed
 RelatedInterventions=Related interventions
 ShowIntervention=Show intervention