diff --git a/FlaskTester.py b/FlaskTester.py
index ace2b11..4c9b9f2 100755
--- a/FlaskTester.py
+++ b/FlaskTester.py
@@ -345,7 +345,7 @@ def _request(self, method: str, path: str, **kwargs):
 
 @pytest.fixture
 def ft_authenticator():
-    allow = os.environ["FLASK_TESTER_ALLOW"].split(" ") if "FLASK_TESTER_ALLOW" in os.environ else ["bearer", "basic", "param"]
+    allow = os.environ.get("FLASK_TESTER_ALLOW", "bearer basic param").split(" ")
     auth = Authenticator(allow)
     if "FLASK_TESTER_AUTH" in os.environ:
         auth.setPasses(os.environ["FLASK_TESTER_AUTH"].split(","))
@@ -354,10 +354,11 @@ def ft_authenticator():
 
 @pytest.fixture
 def ft_client(ft_authenticator):
+    default_login = os.environ.get("FLASK_TESTER_DEFAULT", None)
     client: Client
     if "FLASK_TESTER_URL" in os.environ:
         app_url = os.environ["FLASK_TESTER_URL"]
-        client = RequestClient(ft_authenticator, app_url)
+        client = RequestClient(ft_authenticator, app_url, default_login)
     elif "FLASK_TESTER_APP" in os.environ:
         pkg_name = os.environ["FLASK_TESTER_APP"]
         pkg = importlib.import_module(pkg_name)
@@ -367,7 +368,7 @@ def ft_client(ft_authenticator):
             app = getattr(pkg, "create_app")()
         else:
             raise FlaskTesterError(f"cannot find Flask app in {pkg_name}")
-        client = FlaskClient(ft_authenticator, app.test_client())
+        client = FlaskClient(ft_authenticator, app.test_client(), default_login)
     else:
         raise FlaskTesterError("no Flask application to test")
     yield client
diff --git a/README.md b/README.md
index ef9825c..4c2f464 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,7 @@ The package provides two fixtures:
 - `ft_client` for app testing, which depends on the previous fixture, plus environment
   variables which allow to find the application, at least one must be defined.
 
+  - `FLASK_TESTER_DEFAULT` default login for authentication.
   - `FLASK_TESTER_URL` URL of the running application for external tests.
   - `FLASK_TESTER_APP` package (filename with `.py`) to be imported for the application.
     - the application is expected to be named `app`
@@ -80,6 +81,10 @@ The implementation of these fixtures is based on four classes:
 
 ## Versions
 
-### 0.9 on ?
+### 0.10 on ?
+
+Add `FLASK_TESTER_DEFAULT` environment configuration to `ft_client`.
+
+### 0.9 on 2024-03-11
 
 Initial revision extracted from a separate project.
diff --git a/pyproject.toml b/pyproject.toml
index 32c4c18..35811f5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "FlaskTester"
-version = "0.9"
+version = "0.10"
 authors = [ { name = "Fabien Coelho", email = "flask.tester@coelho.net" } ]
 description = "Pytest fixtures for Flask authenticated internal and external tests"
 readme = "README.md"