diff --git a/htdocs/admin/tools/purge.php b/htdocs/admin/tools/purge.php
index 519f575d8b9..e10b84bb5d0 100644
--- a/htdocs/admin/tools/purge.php
+++ b/htdocs/admin/tools/purge.php
@@ -67,8 +67,15 @@ if ($_POST["action"]=='purge')
 		{
 			//print "x ".$filesarray[$key]['fullname']."<br>\n";
 			$count+=dol_delete_dir_recursive($filesarray[$key]['fullname']);
-		}		
-
+		}
+		
+		// Update cachenbofdoc
+		if ($conf->ecm->enabled && $_POST["choice"]=='allfiles')
+		{
+			require_once(DOL_DOCUMENT_ROOT."/ecm/ecmdirectory.class.php");
+			$ecmdirstatic = new ECMDirectory($db);
+			$result = $ecmdirstatic->refreshcachenboffile(1);
+		}
 	}
 
 	if ($count) $message=$langs->trans("PurgeNDirectoriesDeleted",$count);
diff --git a/htdocs/ecm/ecmdirectory.class.php b/htdocs/ecm/ecmdirectory.class.php
index eec686db9ca..340436d1d85 100644
--- a/htdocs/ecm/ecmdirectory.class.php
+++ b/htdocs/ecm/ecmdirectory.class.php
@@ -607,9 +607,10 @@ class EcmDirectory // extends CommonObject
 	/**
 	*	\brief		Refresh value for cachenboffile
 	* 	\param		directory		Directory to scan
+	*   \param    all         0=refresh this id , 1=refresh this entity
 	* 	\return		int				<0 if KO, Nb of files in directory if OK
 	*/
-	function refreshcachenboffile()
+	function refreshcachenboffile($all=0)
 	{
 		global $conf;
 		include_once(DOL_DOCUMENT_ROOT.'/lib/files.lib.php');
@@ -622,8 +623,16 @@ class EcmDirectory // extends CommonObject
 		
 		// Update request
     $sql = "UPDATE ".MAIN_DB_PREFIX."ecm_directories SET";
-		$sql.= " cachenbofdoc='".sizeof($filelist)."'";
-    $sql.= " WHERE rowid=".$this->id;
+		$sql.= " cachenbofdoc = '".sizeof($filelist)."'";
+    if (empty($all))
+    {
+    	$sql.= " WHERE rowid = ".$this->id;
+    }
+    else
+    {
+    	$sql.= " WHERE entity = ".$conf->entity;
+    }
+    
     dol_syslog("EcmDirectories::refreshcachenboffile sql=".$sql, LOG_DEBUG);
     $resql = $this->db->query($sql);
     if ($resql)