diff --git a/src/components/cases/expenses-tab.tsx b/src/components/cases/expenses-tab.tsx
index b321e42..615a363 100644
--- a/src/components/cases/expenses-tab.tsx
+++ b/src/components/cases/expenses-tab.tsx
@@ -48,9 +48,10 @@ export function CaseExpensesTab({ caseId }: { caseId: string }) {
       if (upErr) { toast.error("Receipt upload failed", { description: upErr.message }); setSubmitting(false); return; }
       receipt_storage_path = path;
     }
+    if (!user?.id) { toast.error("Not signed in"); setSubmitting(false); return; }
     const { error } = await supabase.from("expenses").insert({
       case_id: caseId,
-      user_id: user?.id,
+      user_id: user.id,
       expense_date: form.expense_date,
       description: form.description.trim(),
       amount,