diff --git a/packages/Webkul/Admin/src/Resources/views/sales/orders/view.blade.php b/packages/Webkul/Admin/src/Resources/views/sales/orders/view.blade.php
index 295821471..0092fa234 100755
--- a/packages/Webkul/Admin/src/Resources/views/sales/orders/view.blade.php
+++ b/packages/Webkul/Admin/src/Resources/views/sales/orders/view.blade.php
@@ -341,7 +341,7 @@
 
                                 <div class="summary-comment-container">
                                     <div class="comment-container">
-                                        <form action="{{ route('admin.sales.orders.comment', $order->id) }}" method="post">
+                                        <form action="{{ route('admin.sales.orders.comment', $order->id) }}" method="post" @submit.prevent="onSubmit">
                                             @csrf()
 
                                             <div class="control-group" :class="[errors.has('comment') ? 'has-error' : '']">
diff --git a/packages/Webkul/Product/src/Type/Simple.php b/packages/Webkul/Product/src/Type/Simple.php
index e7620fdd5..2c0a90e5a 100644
--- a/packages/Webkul/Product/src/Type/Simple.php
+++ b/packages/Webkul/Product/src/Type/Simple.php
@@ -56,7 +56,9 @@ class Simple extends AbstractType
     public function haveSufficientQuantity($qty)
     {
         $backorders = core()->getConfigData('catalog.inventory.stock_options.backorders');
-        
+
+        $backorders = ! is_null ($backorders) ? $backorders : false;
+  
         return $qty <= $this->totalQuantity() ? true : $backorders;
     }
 }
\ No newline at end of file