diff --git a/app/Ninja/Repositories/ExpenseRepository.php b/app/Ninja/Repositories/ExpenseRepository.php
index 20d561faad7c..0860c372c57c 100644
--- a/app/Ninja/Repositories/ExpenseRepository.php
+++ b/app/Ninja/Repositories/ExpenseRepository.php
@@ -129,7 +129,7 @@ class ExpenseRepository extends BaseRepository
             $expense->private_notes = trim($input['private_notes']);
         }
         $expense->public_notes = trim($input['public_notes']);
-        $expense->should_be_invoiced = floatval($input['should_be_invoiced']) || $expense->client_id ? true : false;
+        $expense->should_be_invoiced = isset($input['should_be_invoiced']) && floatval($input['should_be_invoiced']) || $expense->client_id ? true : false;
 
         if ( ! $expense->expense_currency_id) {
             $expense->expense_currency_id = \Auth::user()->account->getCurrencyId();