diff --git a/htdocs/core/lib/project.lib.php b/htdocs/core/lib/project.lib.php
index f8f82d34c1a..19d89c6799b 100644
--- a/htdocs/core/lib/project.lib.php
+++ b/htdocs/core/lib/project.lib.php
@@ -346,7 +346,7 @@ function project_admin_prepare_head()
  * @param   int         $projectidfortotallink  0 or Id of project to use on total line (link to see all time consumed for project)
  * @param   string      $filterprogresscalc     filter text
  * @param   string      $showbilltime           Add the column 'TimeToBill' and 'TimeBilled'
- * @return	void
+ * @return	int									Nb of tasks shown
  */
 function projectLinesa(&$inc, $parent, &$lines, &$level, $var, $showproject, &$taskrole, $projectsListId = '', $addordertick = 0, $projectidfortotallink = 0, $filterprogresscalc = '', $showbilltime = 0)
 {
diff --git a/htdocs/projet/contact.php b/htdocs/projet/contact.php
index 4e4d514380e..166fb0b15fb 100644
--- a/htdocs/projet/contact.php
+++ b/htdocs/projet/contact.php
@@ -216,7 +216,7 @@ if ($id > 0 || ! empty($ref))
 	else print $langs->trans('PrivateProject');
 	print '</td></tr>';
 
-    if (! empty($conf->global->PROJECT_USE_OPPORTUNITIES) && $object->oopp_status)
+    if (! empty($conf->global->PROJECT_USE_OPPORTUNITIES) && $object->opp_status)
     {
     	// Opportunity status
     	print '<tr><td>'.$langs->trans("OpportunityStatus").'</td><td>';
diff --git a/htdocs/projet/tasks/comment.php b/htdocs/projet/tasks/comment.php
index 2ecac789bc3..adc7fb51c3e 100644
--- a/htdocs/projet/tasks/comment.php
+++ b/htdocs/projet/tasks/comment.php
@@ -157,21 +157,21 @@ if ($id > 0 || ! empty($ref))
             print '<td>';
             if (! empty($conf->global->PROJECT_USE_OPPORTUNITIES))
             {
-            	print '<input type="checkbox" disabled name="usage_opportunity"'.(GETPOSTISSET('usage_opportunity') ? (GETPOST('usage_opportunity', 'alpha')!=''?' checked="checked"':'') : ($object->usage_opportunity ? ' checked="checked"' : '')).'"> ';
+            	print '<input type="checkbox" disabled name="usage_opportunity"'.(GETPOSTISSET('usage_opportunity') ? (GETPOST('usage_opportunity', 'alpha')!=''?' checked="checked"':'') : ($projectstatic->usage_opportunity ? ' checked="checked"' : '')).'"> ';
             	$htmltext = $langs->trans("ProjectFollowOpportunity");
             	print $form->textwithpicto($langs->trans("ProjectFollowOpportunity"), $htmltext);
             	print '<br>';
             }
             if (empty($conf->global->PROJECT_HIDE_TASKS))
             {
-            	print '<input type="checkbox" disabled name="usage_task"'.(GETPOSTISSET('usage_task') ? (GETPOST('usage_task', 'alpha')!=''?' checked="checked"':'') : ($object->usage_task ? ' checked="checked"' : '')).'"> ';
+            	print '<input type="checkbox" disabled name="usage_task"'.(GETPOSTISSET('usage_task') ? (GETPOST('usage_task', 'alpha')!=''?' checked="checked"':'') : ($projectstatic->usage_task ? ' checked="checked"' : '')).'"> ';
             	$htmltext = $langs->trans("ProjectFollowTasks");
             	print $form->textwithpicto($langs->trans("ProjectFollowTasks"), $htmltext);
             	print '<br>';
             }
             if (! empty($conf->global->PROJECT_BILL_TIME_SPENT))
             {
-            	print '<input type="checkbox" disabled name="usage_bill_time"'.(GETPOSTISSET('usage_bill_time') ? (GETPOST('usage_bill_time', 'alpha')!=''?' checked="checked"':'') : ($object->usage_bill_time ? ' checked="checked"' : '')).'"> ';
+            	print '<input type="checkbox" disabled name="usage_bill_time"'.(GETPOSTISSET('usage_bill_time') ? (GETPOST('usage_bill_time', 'alpha')!=''?' checked="checked"':'') : ($projectstatic->usage_bill_time ? ' checked="checked"' : '')).'"> ';
             	$htmltext = $langs->trans("ProjectBillTimeDescription");
             	print $form->textwithpicto($langs->trans("BillTime"), $htmltext);
             	print '<br>';