Index: wp-content/themes/twentythirteen/comments.php
===================================================================
--- wp-content/themes/twentythirteen/comments.php	(revision 23972)
+++ wp-content/themes/twentythirteen/comments.php	(working copy)
@@ -57,6 +57,6 @@
 
 	<?php endif; // have_comments() ?>
 
-	<?php comment_form( array( 'format' => 'html5' ) ); ?>
+	<?php comment_form( array( 'format' => 'html5', 'comment_field_first' => true ) ); ?>
 
 </div><!-- #comments -->
\ No newline at end of file