diff --git a/lib/mongo/connection.rb b/lib/mongo/connection.rb
index c131e1d..1dd7368 100644
--- a/lib/mongo/connection.rb
+++ b/lib/mongo/connection.rb
@@ -15,6 +15,7 @@
 # ++
 
 require 'mongo/db'
+require 'logger'
 
 module Mongo