diff --git a/htdocs/core/lib/project.lib.php b/htdocs/core/lib/project.lib.php
index 8409eed5c6e..5dfd111e288 100644
--- a/htdocs/core/lib/project.lib.php
+++ b/htdocs/core/lib/project.lib.php
@@ -558,12 +558,8 @@ function projectLinesb(&$inc, $parent, $lines, &$level, &$projectsrole, &$tasksr
 
 			// Planned Workload
 			print '<td align="center">';
-			if (!empty($lines[$i]->planned_workload)) {
-				$planned_workload_hours = intval($lines[$i]->planned_workload / 3600);
-			}else {
-				$planned_workload_hours = 0;
-			}
-			print $planned_workload_hours.' '.$langs->trans('Hours');
+			if ($lines[$i]->planned_workload) print convertSecondToTime($lines[$i]->planned_workload,'all');
+			else print '--:--';
 			print '</td>';
 
 			// Progress