diff --git a/app/Http/Controllers/ActivityController.php b/app/Http/Controllers/ActivityController.php
index a0282e2..74da8c8 100644
--- a/app/Http/Controllers/ActivityController.php
+++ b/app/Http/Controllers/ActivityController.php
@@ -465,7 +465,7 @@ class ActivityController extends Controller
 				$activity->save();
 				$activity->level = $activity_row['level'];
       }
-      if (isset($data['activities'][$i]['nik'])) {
+      if (isset($data['activities'][$i]['nik']) && $data['activities'][$i]['nik'] != '') {
         $user = User::where("ktp_number", $data['activities'][$i]['nik'])->first();	
         $userProyek = UserToProyek::where("user_id", $user->id)
           ->where("proyek_id", $projectId)