diff --git a/htdocs/blockedlog/ajax/block-add.php b/htdocs/blockedlog/ajax/block-add.php
new file mode 100644
index 00000000000..247b01186fe
--- /dev/null
+++ b/htdocs/blockedlog/ajax/block-add.php
@@ -0,0 +1,19 @@
+<?php 
+
+	require '../../main.inc.php';
+	require_once DOL_DOCUMENT_ROOT.'/blockedlog/class/blockedlog.class.php';
+	
+	$id = GETPOST('id','int');
+	$element = GETPOST('element','alpha');
+	$action = GETPOST('action','alpha');
+	
+	if($element === 'facture') {
+		dol_include_once('/compta/facture/class/facture.class.php');
+		
+		$facture = new Facture($db);
+		if($facture->fetch($id)>0) {
+			$facture->call_trigger($action, $user);
+		}
+		
+	}
+	
\ No newline at end of file
diff --git a/htdocs/compta/facture/card.php b/htdocs/compta/facture/card.php
index c4bf83293de..ffab33275a7 100644
--- a/htdocs/compta/facture/card.php
+++ b/htdocs/compta/facture/card.php
@@ -4248,6 +4248,37 @@ else if ($id > 0 || ! empty($ref))
 		$delallowed = $user->rights->facture->supprimer;
 
 		print $formfile->showdocuments('facture', $filename, $filedir, $urlsource, $genallowed, $delallowed, $object->modelpdf, 1, 0, 0, 28, 0, '', '', '', $soc->default_lang);
+		
+		if(!empty($conf->blockedlog->enabled) && $object->statut>0) {
+			?>
+			<script type="text/javascript">
+
+			$(document).ready(function() {
+				$('a.documentpreview').click(function() {
+					$.post("<?php echo DOL_URL_ROOT."/blockedlog/ajax/block-add.php" ?>"
+							, { 
+								id:<?php echo $object->id; ?> 
+								, element:"<?php echo $object->element ?>"
+								, action:"PREVIEW_BILL" 
+							}
+					);
+				});
+				$('a.documentdownload').click(function() {
+					$.post("<?php echo DOL_URL_ROOT."/blockedlog/ajax/block-add.php" ?>"
+							, { 
+								id:<?php echo $object->id; ?> 
+								, element:"<?php echo $object->element ?>"
+								, action:"DOWNLOAD_BILL" 
+							}
+					);
+				});
+			});
+			
+			</script>
+			<?php
+		}
+		
+		
 		$somethingshown = $formfile->numoffiles;
 
 		// Show links to link elements
diff --git a/htdocs/core/class/html.formfile.class.php b/htdocs/core/class/html.formfile.class.php
index 89cf70951ad..44a90794790 100644
--- a/htdocs/core/class/html.formfile.class.php
+++ b/htdocs/core/class/html.formfile.class.php
@@ -712,7 +712,7 @@ class FormFile
 					$out.= '<td class="tdoverflowmax300">';
                     $tmp = $this->showPreview($file,$modulepart,$relativepath,0,$param);
                     $out.= ($tmp?$tmp.' ':'');
-					$out.= '<a href="'.$documenturl.'?modulepart='.$modulepart.'&amp;file='.urlencode($relativepath).($param?'&'.$param:'').'"';
+					$out.= '<a class="documentdownload" href="'.$documenturl.'?modulepart='.$modulepart.'&amp;file='.urlencode($relativepath).($param?'&'.$param:'').'"';
 					$mime=dol_mimetype($relativepath,'',0);
 					if (preg_match('/text/',$mime)) $out.= ' target="_blank"';
 					$out.= ' target="_blank">';
diff --git a/htdocs/core/triggers/interface_50_modBlockedlog_ActionsBlockedLog.class.php b/htdocs/core/triggers/interface_50_modBlockedlog_ActionsBlockedLog.class.php
index 461a277dfd4..004c4eecd78 100644
--- a/htdocs/core/triggers/interface_50_modBlockedlog_ActionsBlockedLog.class.php
+++ b/htdocs/core/triggers/interface_50_modBlockedlog_ActionsBlockedLog.class.php
@@ -51,7 +51,8 @@ class InterfaceActionsBlockedLog extends DolibarrTriggers
 			return 0;
 		}
 		
-		if($action==='BILL_VALIDATE' || $action === 'BILL_PAYED' || $action==='BILL_UNPAYED' || $action === 'BILL_SENTBYMAIL') {
+		if($action==='BILL_VALIDATE' || $action === 'BILL_PAYED' || $action==='BILL_UNPAYED' 
+				|| $action === 'BILL_SENTBYMAIL' || $action === 'DOWNLOAD_BILL' || $action === 'PREVIEW_BILL') {
 			$amounts=  (double) $object->total_ttc;
 		}
 		else if($action === 'PAYMENT_CUSTOMER_CREATE' || $action === 'PAYMENT_ADD_TO_BANK') {
diff --git a/htdocs/langs/en_US/blockedlog.lang b/htdocs/langs/en_US/blockedlog.lang
index 7e64bfad17f..fcad52508bd 100644
--- a/htdocs/langs/en_US/blockedlog.lang
+++ b/htdocs/langs/en_US/blockedlog.lang
@@ -18,4 +18,6 @@ logBILL_VALIDATE=Customer bill set valid from draft
 logBILL_SENTBYMAIL=Customer bill send by mail
 BlockedlogInfoDialog=Log Details
 Fingerprint=Fingerprint
-DownloadLogCSV=Download fingerprints CSV
\ No newline at end of file
+DownloadLogCSV=Download fingerprints CSV
+logPREVIEW_BILL=Preview of a validated customer bill in order to print or download
+logDOWNLOAD_BILL=Download of a validated customer bill in order to print or send
\ No newline at end of file