overriding break tag for image excerpts on category pages

<?php
/**
 * The default template for displaying content
 *
 * @package WordPress
 * @subpackage Twenty_Eleven
 * @since Twenty Eleven 1.0
 */
?>

	<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
		<header class="entry-header">

			<?php if ( comments_open() && ! post_password_required() ) : ?>

			<?php endif; ?>
		</header><!-- .entry-header -->

		<?php if ( is_search() ) : // Only display Excerpts for Search ?>
		<div class="entry-summary">
			<?php the_excerpt(); ?>
		</div><!-- .entry-summary -->
		<?php else : ?>
			<a href="<?php the_permalink() ?>">
			<?php the_excerpt_rss(); ?>
			</a>
		<?php endif; ?>