Index: wp-admin/includes/class-wp-media-list-table.php
===================================================================
--- wp-admin/includes/class-wp-media-list-table.php	(revision 48360)
+++ wp-admin/includes/class-wp-media-list-table.php	(working copy)
@@ -41,8 +41,8 @@
 		$this->detached = ( isset( $_REQUEST['attachment-filter'] ) && 'detached' === $_REQUEST['attachment-filter'] );
 
 		$this->modes = array(
-			'list' => __( 'List View' ),
-			'grid' => __( 'Grid View' ),
+			'list' => __( 'List view' ),
+			'grid' => __( 'Grid view' ),
 		);
 
 		parent::__construct(
Index: wp-includes/media-template.php
===================================================================
--- wp-includes/media-template.php	(revision 48360)
+++ wp-includes/media-template.php	(working copy)
@@ -310,10 +310,10 @@
 	<?php // Template for the view switchers, used for example in the Media Grid. ?>
 	<script type="text/html" id="tmpl-media-library-view-switcher">
 		<a href="<?php echo esc_url( add_query_arg( 'mode', 'list', $_SERVER['REQUEST_URI'] ) ); ?>" class="view-list">
-			<span class="screen-reader-text"><?php _e( 'List View' ); ?></span>
+			<span class="screen-reader-text"><?php _e( 'List view' ); ?></span>
 		</a>
 		<a href="<?php echo esc_url( add_query_arg( 'mode', 'grid', $_SERVER['REQUEST_URI'] ) ); ?>" class="view-grid current" aria-current="page">
-			<span class="screen-reader-text"><?php _e( 'Grid View' ); ?></span>
+			<span class="screen-reader-text"><?php _e( 'Grid view' ); ?></span>
 		</a>
 	</script>