diff --git a/README b/README
index bdf8953..f1b4fcb 100644
--- a/README
+++ b/README
@@ -24,6 +24,10 @@ The tests assume that the Mongo database is running on the default port.
 
 * More tests.
 
+* Implement Admin.
+
+* See FIXME in db test.
+
 
 = License
 
diff --git a/lib/mongo/db.rb b/lib/mongo/db.rb
index 5184407..e1f48a8 100644
--- a/lib/mongo/db.rb
+++ b/lib/mongo/db.rb
@@ -59,6 +59,8 @@ module XGen
         end
 
         def admin
+          # TODO
+          raise "not implemented"
           Admin.new(self)
         end