diff --git a/app/Http/Controllers/ProjectController.php b/app/Http/Controllers/ProjectController.php
index 8a9d124..39aee49 100644
--- a/app/Http/Controllers/ProjectController.php
+++ b/app/Http/Controllers/ProjectController.php
@@ -387,7 +387,8 @@ class ProjectController extends Controller
 			if(isset($dataPayload['end_date'])){
 				$maxDate = $dataPayload['end_date'];
 				$end = new \DateTime($maxDate);
-				$interval = \DateInterval::createFromDateString('1 day');
+				/* $interval = \DateInterval::createFromDateString('1 day'); */ // should be using this but its bugged
+				$interval = new \DateInterval('P7D');
 			} else {
 				$maxDate = DB::table('assign_material_to_activity as ama')
 					->where("ama.proyek_id", $keyGantt['proyek_id'])