diff --git a/src/routes/timesheet/+page.svelte b/src/routes/timesheet/+page.svelte
index 44b8898..0c46371 100644
--- a/src/routes/timesheet/+page.svelte
+++ b/src/routes/timesheet/+page.svelte
@@ -125,7 +125,7 @@
     } else {
       form.approved_date = null;
     }
-    form.approval = form.total_work_hour <= 1;
+    form.approval = form.total_work_hour <= 1 ? true : null;
     const { error } = await supabase.from("vb_timesheet").insert([form]);
 
     if (error) {