diff --git a/app/serializers/search_topic_list_item_serializer.rb b/app/serializers/search_topic_list_item_serializer.rb
index faf1322ff6a..2dd83d8da78 100644
--- a/app/serializers/search_topic_list_item_serializer.rb
+++ b/app/serializers/search_topic_list_item_serializer.rb
@@ -4,4 +4,12 @@ class SearchTopicListItemSerializer < ListableTopicSerializer
   include TopicTagsMixin
 
   attributes :category_id
+
+  def include_image_url?
+    false
+  end
+
+  def include_thumbnails?
+    false
+  end
 end