Index: modules/block/block.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/block/block.info,v
retrieving revision 1.13
diff -u -p -r1.13 block.info
--- modules/block/block.info	8 Jun 2009 09:23:50 -0000	1.13
+++ modules/block/block.info	5 Jul 2009 08:43:21 -0000
@@ -9,3 +9,4 @@ files[] = block.module
 files[] = block.admin.inc
 files[] = block.install
 files[] = block.test
+required = TRUE