Index: wp-content/themes/twentytwelve/archive.php
===================================================================
--- wp-content/themes/twentytwelve/archive.php	(revision 21933)
+++ wp-content/themes/twentytwelve/archive.php	(working copy)
@@ -30,6 +30,8 @@
 						printf( __( 'Tag Archives: %s', 'twentytwelve' ), '<span>' . single_tag_title( '', false ) . '</span>' );
 					} elseif ( is_category() ) {
 						printf( __( 'Category Archives: %s', 'twentytwelve' ), '<span>' . single_cat_title( '', false ) . '</span>' );
+					} elseif ( is_post_type_archive() ) {
+						printf( __( 'Archives: %s', 'twentytwelve' ), '<span>' . post_type_archive_title( '', false ) . '</span>' );
 					} else {
 						_e( 'Blog Archives', 'twentytwelve' );
 					}