diff --git a/htdocs/contact/agenda.php b/htdocs/contact/agenda.php
index 7f35c71cd11..cc7f36261cc 100644
--- a/htdocs/contact/agenda.php
+++ b/htdocs/contact/agenda.php
@@ -211,7 +211,7 @@ else
         dol_fiche_head($head, 'agenda', $title, -1, 'contact');
 
         $linkback = '<a href="'.DOL_URL_ROOT.'/contact/list.php">'.$langs->trans("BackToList").'</a>';
-        
+
         $morehtmlref='<div class="refidno">';
         if (empty($conf->global->SOCIETE_DISABLE_CONTACTS))
         {
@@ -223,42 +223,42 @@ else
             else $morehtmlref.=$langs->trans("ContactNotLinkedToCompany");
         }
         $morehtmlref.='</div>';
-        
+
         dol_banner_tab($object, 'id', $linkback, 1, 'rowid', 'ref', $morehtmlref);
-        
+
         print '<div class="fichecenter">';
-        
+
         print '<div class="underbanner clearboth"></div>';
- 
+
         $object->info($id);
         print dol_print_object_info($object, 1);
-        
+
         print '</div>';
-                
+
         print dol_fiche_end();
 
-            
+
     	// Actions buttons
-    	
+
         $objcon=$object;
         $object->fetch_thirdparty();
         $objthirdparty=$object->thirdparty;
-    	
+
         $out='';
         $permok=$user->rights->agenda->myactions->create;
         if ((! empty($objthirdparty->id) || ! empty($objcon->id)) && $permok)
         {
             //$out.='<a href="'.DOL_URL_ROOT.'/comm/action/card.php?action=create';
-            if (get_class($objthirdparty) == 'Societe') $out.='&amp;socid='.$objthirdparty->id;
+            if (is_object($objthirdparty) && get_class($objthirdparty) == 'Societe') $out.='&amp;socid='.$objthirdparty->id;
             $out.=(! empty($objcon->id)?'&amp;contactid='.$objcon->id:'').'&amp;backtopage=1&amp;percentage=-1';
         	//$out.=$langs->trans("AddAnAction").' ';
         	//$out.=img_picto($langs->trans("AddAnAction"),'filenew');
         	//$out.="</a>";
     	}
-    
-    	
+
+
     	print '<div class="tabsAction">';
-    
+
         if (! empty($conf->agenda->enabled))
         {
         	if (! empty($user->rights->agenda->myactions->create) || ! empty($user->rights->agenda->allactions->create))
@@ -270,22 +270,22 @@ else
             	print '<a class="butActionRefused" href="#">'.$langs->trans("AddAction").'</a>';
         	}
         }
-    
+
         print '</div>';
-    
+
         if (! empty($conf->agenda->enabled) && (!empty($user->rights->agenda->myactions->read) || !empty($user->rights->agenda->allactions->read) ))
        	{
             $param='&id='.$id;
             if (! empty($contextpage) && $contextpage != $_SERVER["PHP_SELF"]) $param.='&contextpage='.$contextpage;
             if ($limit > 0 && $limit != $conf->liste_limit) $param.='&limit='.$limit;
-           	    
-        
+
+
             print load_fiche_titre($langs->trans("TasksHistoryForThisContact"),'','');
-    
+
             // List of all actions
     		$filters=array();
         	$filters['search_agenda_label']=$search_agenda_label;
-        	
+
             show_actions_done($conf,$langs,$db,$objthirdparty,$object,0,$actioncode, '', $filters, $sortfield, $sortorder);
         }
     }
diff --git a/htdocs/core/lib/company.lib.php b/htdocs/core/lib/company.lib.php
index ae4dfe1c2e4..fe36e0e02f4 100644
--- a/htdocs/core/lib/company.lib.php
+++ b/htdocs/core/lib/company.lib.php
@@ -1043,7 +1043,7 @@ function show_actions_done($conf, $langs, $db, $filterobj, $objcon='', $noprint=
     global $param;
 
     // Check parameters
-    if (! is_object($filterobj)) dol_print_error('','BadParameter');
+    if (! is_object($filterobj) && ! is_object($objcon)) dol_print_error('','BadParameter');
 
     $out='';
     $histo=array();
@@ -1061,24 +1061,24 @@ function show_actions_done($conf, $langs, $db, $filterobj, $objcon='', $noprint=
         $sql.= " a.fk_user_author, a.fk_contact,";
         $sql.= " c.code as acode, c.libelle as alabel, c.picto as apicto,";
         $sql.= " u.rowid as user_id, u.login as user_login, u.photo as user_photo, u.firstname as user_firstname, u.lastname as user_lastname";
-        if (get_class($filterobj) == 'Societe')  $sql.= ", sp.lastname, sp.firstname";
-        if (get_class($filterobj) == 'Adherent') $sql.= ", m.lastname, m.firstname";
-        if (get_class($filterobj) == 'CommandeFournisseur') $sql.= ", o.ref";
+        if (is_object($filterobj) && get_class($filterobj) == 'Societe')  $sql.= ", sp.lastname, sp.firstname";
+        if (is_object($filterobj) && get_class($filterobj) == 'Adherent') $sql.= ", m.lastname, m.firstname";
+        if (is_object($filterobj) && get_class($filterobj) == 'CommandeFournisseur') $sql.= ", o.ref";
         $sql.= " FROM ".MAIN_DB_PREFIX."user as u, ".MAIN_DB_PREFIX."actioncomm as a";
         $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."c_actioncomm as c ON a.fk_action = c.id";
-        if (get_class($filterobj) == 'Societe')  $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."socpeople as sp ON a.fk_contact = sp.rowid";
-        if (get_class($filterobj) == 'Adherent') $sql.= ", ".MAIN_DB_PREFIX."adherent as m";
-        if (get_class($filterobj) == 'CommandeFournisseur') $sql.= ", ".MAIN_DB_PREFIX."commande_fournisseur as o";
+        if (is_object($filterobj) && get_class($filterobj) == 'Societe')  $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."socpeople as sp ON a.fk_contact = sp.rowid";
+        if (is_object($filterobj) && get_class($filterobj) == 'Adherent') $sql.= ", ".MAIN_DB_PREFIX."adherent as m";
+        if (is_object($filterobj) && get_class($filterobj) == 'CommandeFournisseur') $sql.= ", ".MAIN_DB_PREFIX."commande_fournisseur as o";
         $sql.= " WHERE u.rowid = a.fk_user_action";
         $sql.= " AND a.entity IN (".getEntity('agenda').")";
-        if (get_class($filterobj) == 'Societe'  && $filterobj->id) $sql.= " AND a.fk_soc = ".$filterobj->id;
-        if (get_class($filterobj) == 'Project' && $filterobj->id) $sql.= " AND a.fk_project = ".$filterobj->id;
-        if (get_class($filterobj) == 'Adherent')
+        if (is_object($filterobj) && get_class($filterobj) == 'Societe'  && $filterobj->id) $sql.= " AND a.fk_soc = ".$filterobj->id;
+        if (is_object($filterobj) && get_class($filterobj) == 'Project' && $filterobj->id) $sql.= " AND a.fk_project = ".$filterobj->id;
+        if (is_object($filterobj) && get_class($filterobj) == 'Adherent')
         {
             $sql.= " AND a.fk_element = m.rowid AND a.elementtype = 'member'";
             if ($filterobj->id) $sql.= " AND a.fk_element = ".$filterobj->id;
         }
-        if (get_class($filterobj) == 'CommandeFournisseur')
+        if (is_object($filterobj) && get_class($filterobj) == 'CommandeFournisseur')
         {
             $sql.= " AND a.fk_element = o.rowid AND a.elementtype = 'order_supplier'";
             if ($filterobj->id) $sql.= " AND a.fk_element = ".$filterobj->id;
@@ -1239,7 +1239,7 @@ function show_actions_done($conf, $langs, $db, $filterobj, $objcon='', $noprint=
         $facturestatic=new Facture($db);
 
         $out.='<form name="listactionsfilter" class="listactionsfilter" action="' . $_SERVER["PHP_SELF"] . '" method="POST">';
-        if ($objcon && get_class($objcon) == 'Contact' && get_class($filterobj) == 'Societe')
+        if ($objcon && get_class($objcon) == 'Contact' && $filterobj && get_class($filterobj) == 'Societe')
         {
             $out.='<input type="hidden" name="id" value="'.$objcon->id.'" />';
         }
@@ -1247,7 +1247,7 @@ function show_actions_done($conf, $langs, $db, $filterobj, $objcon='', $noprint=
         {
             $out.='<input type="hidden" name="id" value="'.$filterobj->id.'" />';
         }
-        if (get_class($filterobj) == 'Societe') $out.='<input type="hidden" name="socid" value="'.$filterobj->id.'" />';
+        if ($filterobj && get_class($filterobj) == 'Societe') $out.='<input type="hidden" name="socid" value="'.$filterobj->id.'" />';
 
         $out.="\n";