diff --git a/oslo_vmware/api.py b/oslo_vmware/api.py
index 76cbebac..81c44ef7 100644
--- a/oslo_vmware/api.py
+++ b/oslo_vmware/api.py
@@ -243,7 +243,8 @@ class VMwareAPISession(object):
         LOG.debug("Logging into host: %s.", self._host)
         session = self.vim.Login(session_manager,
                                  userName=self._server_username,
-                                 password=self._server_password)
+                                 password=self._server_password,
+                                 locale='en')
         self._session_id = session.key
         # We need to save the username in the session since we may need it
         # later to check active session. The SessionIsActive method requires
diff --git a/oslo_vmware/tests/test_api.py b/oslo_vmware/tests/test_api.py
index e268b775..ad5bce45 100644
--- a/oslo_vmware/tests/test_api.py
+++ b/oslo_vmware/tests/test_api.py
@@ -173,7 +173,7 @@ class VMwareAPISessionTest(base.TestCase):
         session_manager = vim_obj.service_content.sessionManager
         vim_obj.Login.assert_called_once_with(
             session_manager, userName=VMwareAPISessionTest.USERNAME,
-            password=VMwareAPISessionTest.PASSWORD)
+            password=VMwareAPISessionTest.PASSWORD, locale='en')
         self.assertFalse(vim_obj.TerminateSession.called)
         self.assertEqual(session.key, api_session._session_id)
         pbm.set_soap_cookie.assert_called_once_with(cookie)
@@ -197,7 +197,7 @@ class VMwareAPISessionTest(base.TestCase):
             userName=VMwareAPISessionTest.USERNAME)
         vim_obj.Login.assert_called_once_with(
             session_manager, userName=VMwareAPISessionTest.USERNAME,
-            password=VMwareAPISessionTest.PASSWORD)
+            password=VMwareAPISessionTest.PASSWORD, locale='en')
         self.assertEqual(new_session_key, api_session._session_id)
 
     def test_create_session_with_existing_active_session(self):
@@ -257,7 +257,7 @@ class VMwareAPISessionTest(base.TestCase):
         session_manager = vim_obj.service_content.sessionManager
         vim_obj.Login.assert_called_once_with(
             session_manager, userName=VMwareAPISessionTest.USERNAME,
-            password=VMwareAPISessionTest.PASSWORD)
+            password=VMwareAPISessionTest.PASSWORD, locale='en')
         api_session.logout()
         vim_obj.Logout.assert_called_once_with(
             session_manager)