From e037635f184fe5ea586e5a0928162af21ea659ba Mon Sep 17 00:00:00 2001
From: AJ Clarke <aj@ajmac.local>
Date: Fri, 14 Apr 2017 09:52:13 -0700
Subject: [PATCH] Prevents duplicate thumbnail when featured image is added to
 the product gallery

---
 templates/single-product/product-thumbnails.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/templates/single-product/product-thumbnails.php b/templates/single-product/product-thumbnails.php
index 67e15ec6ba8..b9ca4b0c709 100644
--- a/templates/single-product/product-thumbnails.php
+++ b/templates/single-product/product-thumbnails.php
@@ -25,7 +25,13 @@ global $post, $product;
 $attachment_ids = $product->get_gallery_image_ids();
 
 if ( $attachment_ids && has_post_thumbnail() ) {
+
 	foreach ( $attachment_ids as $attachment_id ) {
+
+		if ( get_post_thumbnail_id() == $attachment_id ) {
+			continue;
+		}
+
 		$full_size_image = wp_get_attachment_image_src( $attachment_id, 'full' );
 		$thumbnail       = wp_get_attachment_image_src( $attachment_id, 'shop_thumbnail' );
 		$image_title     = get_post_field( 'post_excerpt', $attachment_id );
@@ -43,5 +49,7 @@ if ( $attachment_ids && has_post_thumbnail() ) {
  		$html .= '</a></div>';
 
 		echo apply_filters( 'woocommerce_single_product_image_thumbnail_html', $html, $attachment_id );
+
 	}
+
 }