Index: wp-admin/css/wp-admin.css
===================================================================
--- wp-admin/css/wp-admin.css	(revision 22893)
+++ wp-admin/css/wp-admin.css	(working copy)
@@ -880,6 +880,7 @@
 
 #doaction,
 #doaction2,
+#clear-recent-list,
 #post-query-submit {
 	margin: 1px 8px 0 0;
 }
Index: wp-admin/includes/class-wp-plugins-list-table.php
===================================================================
--- wp-admin/includes/class-wp-plugins-list-table.php	(revision 22893)
+++ wp-admin/includes/class-wp-plugins-list-table.php	(working copy)
@@ -270,7 +270,7 @@
 		echo '<div class="alignleft actions">';
 
 		if ( ! $this->screen->is_network && 'recently_activated' == $status )
-			submit_button( __( 'Clear List' ), 'small', 'clear-recent-list', false );
+			submit_button( __( 'Clear List' ), 'secondary', 'clear-recent-list', false );
 		elseif ( 'top' == $which && 'mustuse' == $status )
 			echo '<p>' . sprintf( __( 'Files in the <code>%s</code> directory are executed automatically.' ), str_replace( ABSPATH, '/', WPMU_PLUGIN_DIR ) ) . '</p>';
 		elseif ( 'top' == $which && 'dropins' == $status )