diff --git a/lib/mongo.rb b/lib/mongo.rb
index 85d7e50..33c7559 100644
--- a/lib/mongo.rb
+++ b/lib/mongo.rb
@@ -3,7 +3,7 @@
 $:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 
 module Mongo
-  VERSION = "1.0.1"
+  VERSION = "1.0.2"
 end
 
 module Mongo
diff --git a/lib/mongo/db.rb b/lib/mongo/db.rb
index 9573d0c..0cdc006 100644
--- a/lib/mongo/db.rb
+++ b/lib/mongo/db.rb
@@ -87,7 +87,7 @@ module Mongo
     #
     # @core authenticate authenticate-instance_method
     def authenticate(username, password, save_auth=true)
-      doc = command(:getnonce => 1, :check_response => false)
+      doc = command({:getnonce => 1}, :check_response => false)
       raise "error retrieving nonce: #{doc}" unless ok?(doc)
       nonce = doc['nonce']
 
@@ -465,7 +465,7 @@ module Mongo
         sock           = old_sock
       end
       raise MongoArgumentError, "command must be given a selector" unless selector.is_a?(Hash) && !selector.empty?
-      if selector.class.eql?(Hash) && selector.keys.length > 1 && RUBY_VERSION < '1.9'
+      if selector.keys.length > 1 && RUBY_VERSION < '1.9' && selector.class != BSON::OrderedHash
         raise MongoArgumentError, "DB#command requires an OrderedHash when hash contains multiple keys"
       end