diff --git a/templates/AlbumIndex.php b/templates/AlbumIndex.php
index c311884..29a856b 100644
--- a/templates/AlbumIndex.php
+++ b/templates/AlbumIndex.php
@@ -46,8 +46,17 @@ class AlbumIndex extends SubTemplate
 							<a href="', $album['link'], '">';
 
 				if (isset($album['thumbnail']))
+				{
+					$thumbs = [];
+					foreach ([1, 2] as $factor)
+						$thumbs[$factor] = $album['thumbnail']->getThumbnailUrl(
+							static::TILE_WIDTH * $factor, static::TILE_HEIGHT * $factor, true, true);
+
 					echo '
-								<img src="', $album['thumbnail']->getThumbnailUrl(static::TILE_WIDTH, static::TILE_HEIGHT, true, true), '" alt="">';
+								<img src="', $thumbs[1], '"' . (isset($thumbs[2]) ?
+									' srcset="' . $thumbs[2] . ' 2x"' : '') .
+									' alt="">';
+				}
 				else
 					echo '
 								<img src="', BASEURL, '/images/nothumb.png" alt="">';