diff --git a/inc/template-tags.php b/inc/template-tags.php
index 056291d..19dc591 100644
--- a/inc/template-tags.php
+++ b/inc/template-tags.php
@@ -132,7 +132,7 @@ if ( ! function_exists( '_s_post_thumbnail' ) ) :
 
 		<?php else : ?>
 
-		<a class="post-thumbnail" href="<?php the_permalink(); ?>" aria-hidden="true">
+		<a class="post-thumbnail" href="<?php the_permalink(); ?>" aria-hidden="true" tabindex="-1">
 			<?php
 			the_post_thumbnail( 'post-thumbnail', array(
 				'alt' => the_title_attribute( array(