diff --git a/tests/data/authorized_user_cloud_sdk_with_quota_project_id.json b/tests/data/authorized_user_cloud_sdk_with_quota_project_id.json
new file mode 100644
index 0000000..53a8ff8
--- /dev/null
+++ b/tests/data/authorized_user_cloud_sdk_with_quota_project_id.json
@@ -0,0 +1,7 @@
+{
+  "client_id": "764086051850-6qr4p6gpi6hn506pt8ejuq83di341hur.apps.googleusercontent.com",
+  "client_secret": "secret",
+  "refresh_token": "alabalaportocala",
+  "type": "authorized_user",
+  "quota_project_id": "quota_project_id"
+}
diff --git a/tests/test__default.py b/tests/test__default.py
index 35000b0..b769fc7 100644
--- a/tests/test__default.py
+++ b/tests/test__default.py
@@ -37,6 +37,10 @@
     DATA_DIR, "authorized_user_cloud_sdk.json"
 )
 
+AUTHORIZED_USER_CLOUD_SDK_WITH_QUOTA_PROJECT_ID_FILE = os.path.join(
+    DATA_DIR, "authorized_user_cloud_sdk_with_quota_project_id.json"
+)
+
 SERVICE_ACCOUNT_FILE = os.path.join(DATA_DIR, "service_account.json")
 
 with open(SERVICE_ACCOUNT_FILE) as fh:
@@ -101,6 +105,13 @@
     assert isinstance(credentials, google.oauth2.credentials.Credentials)
     assert project_id is None
 
+    # No warning if the json file has quota project id.
+    credentials, project_id = _default._load_credentials_from_file(
+        AUTHORIZED_USER_CLOUD_SDK_WITH_QUOTA_PROJECT_ID_FILE
+    )
+    assert isinstance(credentials, google.oauth2.credentials.Credentials)
+    assert project_id is None
+
 
 def test__load_credentials_from_file_service_account():
     credentials, project_id = _default._load_credentials_from_file(SERVICE_ACCOUNT_FILE)