diff --git a/lib/omniauth/strategies/ldap.rb b/lib/omniauth/strategies/ldap.rb
index c28628d..479340b 100644
--- a/lib/omniauth/strategies/ldap.rb
+++ b/lib/omniauth/strategies/ldap.rb
@@ -70,14 +70,14 @@ def self.map_user(mapper, object)
         mapper.each do |key, value|
           case value
           when String
-            user[key] = object[value.downcase.to_sym].first if object[value.downcase.to_sym]
+            user[key] = object[value.downcase.to_sym].first if object.respond_to? value.downcase.to_sym
           when Array
-            value.each {|v| (user[key] = object[v.downcase.to_sym].first; break;) if object[v.downcase.to_sym]}
+            value.each {|v| (user[key] = object[v.downcase.to_sym].first; break;) if object.respond_to? v.downcase.to_sym}
           when Hash
             value.map do |key1, value1|
               pattern = key1.dup
               value1.each_with_index do |v,i|
-                part = ''; v.collect(&:downcase).collect(&:to_sym).each {|v1| (part = object[v1].first; break;) if object[v1]}
+                part = ''; v.collect(&:downcase).collect(&:to_sym).each {|v1| (part = object[v1].first; break;) if object.respond_to? v1}
                 pattern.gsub!("%#{i}",part||'')
               end
               user[key] = pattern
diff --git a/spec/omniauth/strategies/ldap_spec.rb b/spec/omniauth/strategies/ldap_spec.rb
index 01a48bb..28347fe 100644
--- a/spec/omniauth/strategies/ldap_spec.rb
+++ b/spec/omniauth/strategies/ldap_spec.rb
@@ -83,10 +83,25 @@ def session
     context 'success' do
       let(:auth_hash){ last_request.env['omniauth.auth'] }
       before(:each) do
-        @adaptor.stub(:bind_as).and_return({:dn => ['cn=ping, dc=intridea, dc=com'], :mail => ['ping@intridea.com'], :givenname => ['Ping'], :sn => ['Yu'],
-                                           :telephonenumber => ['555-555-5555'], :mobile => ['444-444-4444'], :uid => ['ping'], :title => ['dev'], :address =>[ 'k street'],
-                                           :l => ['Washington'], :st => ['DC'], :co => ["U.S.A"], :postofficebox => ['20001'], :wwwhomepage => ['www.intridea.com'],
-                                           :jpegphoto => ['http://www.intridea.com/ping.jpg'], :description => ['omniauth-ldap']})
+        @adaptor.stub(:bind_as).and_return(Net::LDAP::Entry.from_single_ldif_string(
+      %Q{dn: cn=ping, dc=intridea, dc=com
+email: ping@intridea.com
+givenname: Ping
+sn: Yu
+telephonenumber: 555-555-5555
+mobile: 444-444-4444
+uid: ping
+title: dev
+address: k street
+l: Washington
+st: DC
+co: U.S.A
+postofficebox: 20001
+wwwhomepage: www.intridea.com
+jpegphoto: http://www.intridea.com/ping.jpg
+description: omniauth-ldap
+}
+    ))
         post('/auth/ldap/callback', {:username => 'ping', :password => 'password'})
       end