diff --git a/htdocs/core/lib/project.lib.php b/htdocs/core/lib/project.lib.php
index 602f45db67d..925dba1fd67 100644
--- a/htdocs/core/lib/project.lib.php
+++ b/htdocs/core/lib/project.lib.php
@@ -744,8 +744,8 @@ function projectLinesPerDay(&$inc, $parent, $fuser, $lines, &$level, &$projectsr
  */
 function projectLinesPerWeek(&$inc, $firstdaytoshow, $fuser, $parent, $lines, &$level, &$projectsrole, &$tasksrole, $mine, $restricteditformytask=1, $var=false)
 {
-	global $db, $user, $bc, $langs;
-	global $form, $formother, $projectstatic, $taskstatic;
+	global $conf, $db, $user, $bc, $langs;
+	global $form, $formother, $projectstatic, $taskstatic, $thirdpartystatic;
 
 	$numlines=count($lines);
 
@@ -791,12 +791,23 @@ function projectLinesPerWeek(&$inc, $firstdaytoshow, $fuser, $parent, $lines, &$
 			    
 				print "<tr ".$bc[$var].">\n";
 
+				if (! empty($conf->global->PROJECT_LINES_PERWEEK_SHOW_THIRDPARTY))
+				{
+				    // Thirdparty
+				    print '<td class="nowrap">';
+				    $thirdpartystatic->id=$lines[$i]->socid;
+				    $thirdpartystatic->name=$lines[$i]->thirdparty_name;
+				    print $thirdpartystatic->getNomUrl(1, 'project', 10);
+				    print '</td>';
+				}
+				
 				// Project
 				print '<td class="nowrap">'.$var;
 				$projectstatic->id=$lines[$i]->fk_project;
 				$projectstatic->ref=$lines[$i]->projectref;
 				$projectstatic->title=$lines[$i]->projectlabel;
 				$projectstatic->public=$lines[$i]->public;
+				$projectstatic->thirdparty_name=$lines[$i]->thirdparty_name;
 				print $projectstatic->getNomUrl(1,'',0,$langs->transnoentitiesnoconv("YourRole").': '.$projectsrole[$lines[$i]->fk_project]);
 				print "</td>";
 
diff --git a/htdocs/projet/activity/perweek.php b/htdocs/projet/activity/perweek.php
index 53b9ba151b4..13d3610b0cc 100644
--- a/htdocs/projet/activity/perweek.php
+++ b/htdocs/projet/activity/perweek.php
@@ -262,6 +262,7 @@ $formproject=new FormProjets($db);
 $projectstatic=new Project($db);
 $project = new Project($db);
 $taskstatic = new Task($db);
+$thirdpartystatic = new Societe($db);
 
 $title=$langs->trans("TimeSpent");
 if ($mine) $title=$langs->trans("MyTimeSpent");
@@ -371,6 +372,10 @@ print '<div class="clearboth" style="padding-bottom: 8px;"></div>';
 
 print '<table class="noborder" width="100%">';
 print '<tr class="liste_titre">';
+if (! empty($conf->global->PROJECT_LINES_PERWEEK_SHOW_THIRDPARTY))
+{
+    print '<td>'.$langs->trans("ThirdParty").'</td>';
+}
 print '<td>'.$langs->trans("Project").'</td>';
 print '<td>'.$langs->trans("RefTask").'</td>';
 print '<td>'.$langs->trans("LabelTask").'</td>';
diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index ef4d4d7d20f..8791028beda 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -54,7 +54,10 @@ class Project extends CommonObject
     var $date_start;
     var $date_end;
     var $date_close;
-    var $socid;
+    
+    var $socid;             // To store id of thirdparty
+    var $thirdparty_name;   // To store name of thirdparty (defined only in some cases)
+    
     var $user_author_id;    //!< Id of project creator. Not defined if shared project.
 	var $user_close_id;
     var $public;      //!< Tell if this is a public or private project
@@ -893,6 +896,8 @@ class Project extends CommonObject
             $label .= ($label?'<br>':'').'<b>' . $langs->trans('Ref') . ': </b>' . $this->ref;	// The space must be after the : to not being explode when showing the title in img_picto
         if (! empty($this->title))
             $label .= ($label?'<br>':'').'<b>' . $langs->trans('Label') . ': </b>' . $this->title;	// The space must be after the : to not being explode when showing the title in img_picto
+        if (! empty($this->thirdparty_name))
+            $label .= ($label?'<br>':'').'<b>' . $langs->trans('ThirdParty') . ': </b>' . $this->thirdparty_name;	// The space must be after the : to not being explode when showing the title in img_picto
         if (! empty($this->dateo))
             $label .= ($label?'<br>':'').'<b>' . $langs->trans('DateStart') . ': </b>' . dol_print_date($this->dateo, 'day');	// The space must be after the : to not being explode when showing the title in img_picto
         if (! empty($this->datee))
diff --git a/htdocs/projet/class/task.class.php b/htdocs/projet/class/task.class.php
index 631b2684246..40b5667c9c0 100644
--- a/htdocs/projet/class/task.class.php
+++ b/htdocs/projet/class/task.class.php
@@ -573,10 +573,12 @@ class Task extends CommonObject
         // List of tasks (does not care about permissions. Filtering will be done later)
         $sql = "SELECT p.rowid as projectid, p.ref, p.title as plabel, p.public, p.fk_statut as projectstatus,";
         $sql.= " t.rowid as taskid, t.ref as taskref, t.label, t.description, t.fk_task_parent, t.duration_effective, t.progress, t.fk_statut as status,";
-        $sql.= " t.dateo as date_start, t.datee as date_end, t.planned_workload, t.rang";
+        $sql.= " t.dateo as date_start, t.datee as date_end, t.planned_workload, t.rang,";
+        $sql.= " s.nom as thirdparty_name";
+        $sql.= " FROM ".MAIN_DB_PREFIX."projet as p";
+        $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."societe as s ON p.fk_soc = s.rowid";
         if ($mode == 0)
         {
-            $sql.= " FROM ".MAIN_DB_PREFIX."projet as p";
             if ($filteronprojuser > 0)
             {
                 $sql.= ", ".MAIN_DB_PREFIX."element_contact as ec";
@@ -593,7 +595,6 @@ class Task extends CommonObject
         }
         elseif ($mode == 1)
         {
-            $sql.= " FROM ".MAIN_DB_PREFIX."projet as p";
             if ($filteronprojuser > 0)
             {
                 $sql.= ", ".MAIN_DB_PREFIX."element_contact as ec";
@@ -689,6 +690,8 @@ class Task extends CommonObject
                     $tasks[$i]->date_start		= $this->db->jdate($obj->date_start);
                     $tasks[$i]->date_end		= $this->db->jdate($obj->date_end);
                     $tasks[$i]->rang	   		= $obj->rang;
+                    
+                    $tasks[$i]->thirdparty_name	= $obj->thirdparty_name;
                 }
 
                 $i++;