diff --git a/htdocs/core/lib/project.lib.php b/htdocs/core/lib/project.lib.php
index f72620ce790..f02565209c3 100644
--- a/htdocs/core/lib/project.lib.php
+++ b/htdocs/core/lib/project.lib.php
@@ -252,6 +252,7 @@ function select_projects($socid=-1, $selected='', $htmlname='projectid')
 
 /**
  * Output a task line
+ *
  * @param   $inc
  * @param   $parent
  * @param   $lines
@@ -287,7 +288,7 @@ function PLinesb(&$inc, $parent, $lines, &$level, &$projectsrole, &$tasksrole, $
                 $lastprojectid=$lines[$i]->fk_project;
             }
 
-            print "<tr $bc[$var]>\n";
+            print "<tr ".$bc[$var].">\n";
 
             // Project
             print "<td>";
@@ -366,6 +367,7 @@ function PLinesb(&$inc, $parent, $lines, &$level, &$projectsrole, &$tasksrole, $
 
 /**
  * Show task lines with a particular parent
+ *
  * @param 	$inc				Counter that count number of lines legitimate to show (for return)
  * @param 	$parent				Id of parent task to start
  * @param 	$lines				Array of all tasks
@@ -512,6 +514,7 @@ function PLines(&$inc, $parent, &$lines, &$level, $var, $showproject, &$taskrole
     if ($total>0)
     {
         print '<tr class="liste_total"><td class="liste_total">'.$langs->trans("Total").'</td>';
+        if ($showproject) print '<td></td>';
         print '<td></td>';
         print '<td></td>';
         print '<td align="right" nowrap="nowrap" class="liste_total">'.ConvertSecondToTime($total).'</td></tr>';
diff --git a/htdocs/projet/activity/list.php b/htdocs/projet/activity/list.php
index 1a15568dc90..5968ee6d6ca 100644
--- a/htdocs/projet/activity/list.php
+++ b/htdocs/projet/activity/list.php
@@ -32,7 +32,7 @@ require_once(DOL_DOCUMENT_ROOT."/core/lib/date.lib.php");
 
 $langs->load('projects');
 
-$mode=$_REQUEST["mode"];
+$mode=GETPOST("mode");
 
 $mine=0;
 if ($mode == 'mine') $mine=1;
@@ -45,6 +45,7 @@ $socid=0;
 if ($user->societe_id > 0) $socid=$user->societe_id;
 $result = restrictedArea($user, 'projet', $projectid);
 
+
 /*
  * Actions
  */
@@ -80,6 +81,10 @@ if ($_POST["action"] == 'addtime' && $user->rights->projet->creer)
         $task->timespent_fk_user = $user->id;
         $task->timespent_date = dol_mktime(12,0,0,$_POST["{$id}month"],$_POST["{$id}day"],$_POST["{$id}year"]);
         $task->addTimeSpent($user);
+
+        // header to avoid submit twice on back
+        header('Location: '.$_SERVER["PHP_SELF"].'?id='.$projectid);
+        exit;
     }
     else
     {
@@ -121,7 +126,8 @@ $tasksrole=$taskstatic->getUserRolesForProjectsOrTasks(0,$user,($project->id?$pr
 
 print_barre_liste($title, $page, $_SERVER["PHP_SELF"], "", $sortfield, $sortorder, "", $num);
 
-if ($mesg) print $mesg;
+
+dol_htmloutput_mesg($mesg);
 
 
 print '<form name="addtime" method="POST" action="'.$_SERVER["PHP_SELF"].'?id='.$project->id.'">';
@@ -143,7 +149,7 @@ print '</form>';
 print "</table>";
 print '</div>';
 
-$db->close();
-
 llxFooter();
+
+$db->close();
 ?>