diff --git a/README.md b/README.md
index 329ab4e..7234c50 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,8 @@ This repository contains the OpenCart  PostFinance Checkout payment module that
 
 ## Documentation
 
-* [English](https://plugin-documentation.postfinance-checkout.ch/pfpayments/opencart-2.3/1.0.29/docs/en/documentation.html)
+* [English](https://plugin-documentation.postfinance-checkout.ch/pfpayments/opencart-2.3/1.0.30/docs/en/documentation.html)
 
 ## License
 
-Please see the [license file](https://github.com/pfpayments/opencart-2.3/blob/1.0.29/LICENSE) for more information.
\ No newline at end of file
+Please see the [license file](https://github.com/pfpayments/opencart-2.3/blob/1.0.30/LICENSE) for more information.
\ No newline at end of file
diff --git a/docs/en/documentation.html b/docs/en/documentation.html
index ab1a7e4..888d1a6 100644
--- a/docs/en/documentation.html
+++ b/docs/en/documentation.html
@@ -21,7 +21,7 @@ <h2>Documentation</h2>				</div>
 		</a>
 	</li>
 	<li>
-		<a href="https://github.com/pfpayments/opencart-2.3/releases/tag/1.0.29/">
+		<a href="https://github.com/pfpayments/opencart-2.3/releases/tag/1.0.30/">
 			Source
 		</a>
 	</li>
@@ -48,7 +48,7 @@ <h1>
 					<div class="olist arabic">
 <ol class="arabic">
 <li>
-<p><a href="https://github.com/pfpayments/opencart-2.3/releases/tag/1.0.29/">Download</a> the extension.</p>
+<p><a href="https://github.com/pfpayments/opencart-2.3/releases/tag/1.0.30/">Download</a> the extension.</p>
 </li>
 <li>
 <p>Extract the files and upload the content of the <code>Upload</code> directory into the root directory of your store using FTP/SSH.</p>
diff --git a/upload/system/library/postfinancecheckout/service/line_item.php b/upload/system/library/postfinancecheckout/service/line_item.php
index 719e4dc..85fb208 100644
--- a/upload/system/library/postfinancecheckout/service/line_item.php
+++ b/upload/system/library/postfinancecheckout/service/line_item.php
@@ -381,8 +381,12 @@ private function createLineItemFromProduct($product){
 		$product['tax_class_id'] = $this->getTaxClassByProductId($product['product_id']);
 
 		if ($this->coupon && (!$this->coupon['product'] || in_array($product['product_id'], $this->coupon['product']))) {
+			$count = 1;
+			if(!empty($this->coupon['product'])) {
+				$count = count($this->coupon['product']);
+			}
 			if ($this->coupon['type'] == 'F') {
-				$discount = $this->coupon['discount'] * ($product['total'] / $this->sub_total);
+				$discount = $this->coupon['discount'] / $count;
 			}
 			elseif ($this->coupon['type'] == 'P') {
 				$discount = $product['total'] / 100 * $this->coupon['discount'];