diff --git a/lib/puppet_x/sqlserver/sql_connection.rb b/lib/puppet_x/sqlserver/sql_connection.rb
index 84a3c764..cbe3fbf3 100644
--- a/lib/puppet_x/sqlserver/sql_connection.rb
+++ b/lib/puppet_x/sqlserver/sql_connection.rb
@@ -32,7 +32,7 @@ def get_connection_string(config)
           'Provider'         => 'SQLOLEDB.1',
           'Initial Catalog'  => config[:database] || 'master',
           'Application Name' => 'Puppet',
-          'Data Source'      => 'localhost'
+          'Data Source'      => '.'
         }
 
         admin_user = config[:admin_user] || ''
@@ -52,7 +52,7 @@ def get_connection_string(config)
         end
 
         if config[:instance_name] != nil && config[:instance_name] !~ /^MSSQLSERVER$/
-          params['Data Source'] = "localhost\\#{config[:instance_name]}"
+          params['Data Source'] = ".\\#{config[:instance_name]}"
         end
 
         params.map { |k, v| "#{k}=#{v}" }.join(';')
diff --git a/spec/unit/puppet_x/sql_connection_spec.rb b/spec/unit/puppet_x/sql_connection_spec.rb
index 69a6db3b..d8ada844 100644
--- a/spec/unit/puppet_x/sql_connection_spec.rb
+++ b/spec/unit/puppet_x/sql_connection_spec.rb
@@ -17,7 +17,7 @@ def stub_connection
     context 'command execution' do
       before :each do
         stub_connection
-        @connection.stubs(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=localhost;User ID=sa;Password=Pupp3t1@')
+        @connection.stubs(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=.;User ID=sa;Password=Pupp3t1@')
       end
       it 'should not raise an error but populate has_errors with message' do
         subject.stubs(:execute).raises(Exception.new("SQL Server\n error has happened"))
@@ -43,7 +43,7 @@ def stub_connection
 
       context 'Use default authentication' do
         it 'should defaul to SQL_LOGIN if admin_login_type is not set' do
-          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=localhost;User ID=sa;Password=Pupp3t1@')
+          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=.;User ID=sa;Password=Pupp3t1@')
           subject.open_and_run_command('query', {:admin_user => 'sa', :admin_pass => 'Pupp3t1@' })
         end
       end
@@ -66,11 +66,11 @@ def stub_connection
         end
 
         it 'should not add the default instance of MSSQLSERVER to connection string' do
-          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=localhost;User ID=sa;Password=Pupp3t1@')
+          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=.;User ID=sa;Password=Pupp3t1@')
           subject.open_and_run_command('query', {:admin_user => 'sa', :admin_pass => 'Pupp3t1@', :instance_name => 'MSSQLSERVER'})
         end
         it 'should add a non default instance to connection string' do
-          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=localhost\\LOGGING;User ID=sa;Password=Pupp3t1@')
+          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=.\\LOGGING;User ID=sa;Password=Pupp3t1@')
           subject.open_and_run_command('query', {:admin_user => 'sa', :admin_pass => 'Pupp3t1@', :instance_name => 'LOGGING'})
         end
       end
@@ -93,12 +93,12 @@ def stub_connection
         end
 
         it 'should add integrated security to the connection string if admin and password are empty' do
-          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=localhost;Integrated Security=SSPI')
+          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=.;Integrated Security=SSPI')
           subject.open_and_run_command('query', {:admin_user => '', :admin_pass => '', :admin_login_type => 'WINDOWS_LOGIN'})
         end
 
         it 'should add integrated security to the connection string if admin and password are not defined' do
-          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=localhost;Integrated Security=SSPI')
+          @connection.expects(:Open).with('Provider=SQLOLEDB.1;Initial Catalog=master;Application Name=Puppet;Data Source=.;Integrated Security=SSPI')
           subject.open_and_run_command('query', { :admin_login_type => 'WINDOWS_LOGIN' })
         end
       end