diff --git a/google/cloud/error_reporting/_logging.py b/google/cloud/error_reporting/_logging.py
index 5e83d148..c7d1d909 100644
--- a/google/cloud/error_reporting/_logging.py
+++ b/google/cloud/error_reporting/_logging.py
@@ -70,8 +70,8 @@ def __init__(
         client_options=None,
     ):
         self.logging_client = google.cloud.logging.Client(
-            project,
-            credentials,
+            project=project,
+            credentials=credentials,
             _http=_http,
             client_info=client_info,
             client_options=client_options,
diff --git a/tests/system/test_system.py b/tests/system/test_system.py
index 28125c6a..4565a358 100644
--- a/tests/system/test_system.py
+++ b/tests/system/test_system.py
@@ -15,6 +15,7 @@
 import functools
 import operator
 import unittest
+import mock
 
 from google.cloud import error_reporting
 import google.cloud.errorreporting_v1beta1
@@ -127,3 +128,9 @@ def test_report_exception(self):
 
         error_count = wrapped_get_count(class_name, Config.CLIENT)
         self.assertEqual(error_count, 1)
+
+    def test_report_exception_no_grpc(self):
+        with mock.patch.dict(
+            "os.environ", {"GOOGLE_CLOUD_DISABLE_GRPC": "true"}, clear=True
+        ):
+            self.test_report_exception()
diff --git a/tests/unit/test__logging.py b/tests/unit/test__logging.py
index 772b5229..c5b1cc32 100644
--- a/tests/unit/test__logging.py
+++ b/tests/unit/test__logging.py
@@ -40,7 +40,11 @@ def test_ctor_defaults(self, mocked_cls):
 
         self.assertIs(logging_api.logging_client, mocked_cls.return_value)
         mocked_cls.assert_called_once_with(
-            self.PROJECT, credentials, _http=None, client_info=None, client_options=None
+            project=self.PROJECT,
+            credentials=credentials,
+            _http=None,
+            client_info=None,
+            client_options=None,
         )
 
     @mock.patch("google.cloud.logging.Client")
@@ -60,8 +64,8 @@ def test_ctor_explicit(self, mocked_cls):
 
         self.assertIs(logging_api.logging_client, mocked_cls.return_value)
         mocked_cls.assert_called_once_with(
-            self.PROJECT,
-            credentials,
+            project=self.PROJECT,
+            credentials=credentials,
             _http=http,
             client_info=client_info,
             client_options=client_options,