Index: wp-admin/ms-users.php
===================================================================
--- wp-admin/ms-users.php	(revision 15490)
+++ wp-admin/ms-users.php	(working copy)
@@ -308,7 +308,7 @@
 							break;
 
 							default: ?>
-								<td><?php do_action( 'manage_users_custom_column', $column_name, $user['ID'] ); ?></td>
+								<td><?php do_action( 'ms_manage_users_custom_column', $column_name, $user['ID'] ); ?></td>
 							<?php
 							break;
 						}