diff --git a/snippets/product-media-gallery.liquid b/snippets/product-media-gallery.liquid
index 1d4bcda..b5b053b 100644
--- a/snippets/product-media-gallery.liquid
+++ b/snippets/product-media-gallery.liquid
@@ -237,6 +237,9 @@
               id="Slide-Thumbnails-{{ section.id }}-{{ forloop.index }}{{ id_append }}"
               class="thumbnail-list__item slider__slide{% if section.settings.hide_variants and variant_images contains media.src %} thumbnail-list_item--variant{% endif %}"
               data-target="{{ section.id }}-{{ media.id }}"
+              {% if media.media_type == 'video' or media.media_type == 'external_video' %}
+              data-isVideoType
+              {% endif %}
               data-media-position="{{ media_index }}">
 
               {%- if media.media_type == 'model' -%}