diff --git a/app/Http/Requests/Invoice/UpdateInvoiceRequest.php b/app/Http/Requests/Invoice/UpdateInvoiceRequest.php
index 0aaca8fd00..9805160ab9 100644
--- a/app/Http/Requests/Invoice/UpdateInvoiceRequest.php
+++ b/app/Http/Requests/Invoice/UpdateInvoiceRequest.php
@@ -72,6 +72,9 @@ class UpdateInvoiceRequest extends Request
         $rules['tax_name2'] = 'bail|sometimes|string|nullable';
         $rules['tax_name3'] = 'bail|sometimes|string|nullable';
 
+        // not needed.
+        // $rules['partial_due_date'] = 'bail|sometimes|required_unless:partial,0,null';
+
         return $rules;
     }
 
diff --git a/lang/en/texts.php b/lang/en/texts.php
index 0eac07dd34..c85e026351 100644
--- a/lang/en/texts.php
+++ b/lang/en/texts.php
@@ -3976,7 +3976,7 @@ $LANG = array(
      'add_payment_method_first' => 'add payment method',
      'no_items_selected' => 'No items selected.',
      'payment_due' => 'Payment due',
-     'account_balance' => 'Account balance',
+     'account_balance' => 'Account Balance',
      'thanks' => 'Thanks',
      'minimum_required_payment' => 'Minimum required payment is :amount',
      'under_payments_disabled' => 'Company doesn\'t support under payments.',