diff --git a/moulinette/interfaces/cli.py b/moulinette/interfaces/cli.py
index 9433b116..39b5f9a2 100644
--- a/moulinette/interfaces/cli.py
+++ b/moulinette/interfaces/cli.py
@@ -6,6 +6,20 @@ import getpass
 import locale
 import logging
 from argparse import SUPPRESS
+from collections import OrderedDict
+from datetime import date, datetime
+
+import argcomplete
+
+from moulinette import msignals, m18n
+from moulinette.actionsmap import ActionsMap
+from moulinette.core import MoulinetteError
+from moulinette.interfaces import (
+    BaseActionsMapParser,
+    BaseInterface,
+    ExtendedArgumentParser,
+)
+from moulinette.utils import log
 
 # Monkeypatch _get_action_name function because there is an annoying bug
 # Explained here: https://bugs.python.org/issue29298
@@ -39,22 +53,6 @@ def monkey_get_action_name(argument):
 
 argparse._get_action_name = monkey_get_action_name
 
-from collections import OrderedDict
-from datetime import date, datetime
-
-import argcomplete
-
-from moulinette import msignals, m18n
-from moulinette.actionsmap import ActionsMap
-from moulinette.core import MoulinetteError
-from moulinette.interfaces import (
-    BaseActionsMapParser,
-    BaseInterface,
-    ExtendedArgumentParser,
-)
-from moulinette.utils import log
-
-
 logger = log.getLogger("moulinette.cli")
 
 
diff --git a/test/test_auth.py b/test/test_auth.py
index 624ebccd..b3237089 100644
--- a/test/test_auth.py
+++ b/test/test_auth.py
@@ -207,6 +207,10 @@ class TestAuthAPI:
         mocker.patch("moulinette.Moulinette18n.g", return_value=error)
         moulinette_webapi.get("/test-auth/with_type_int/yoloswag", status=400)
 
+    def test_request_arg_without_action(self, moulinette_webapi, caplog, mocker):
+        self.login(moulinette_webapi)
+        moulinette_webapi.get("/test-auth", status=404)
+
 
 class TestAuthCLI:
     def test_login(self, moulinette_cli, capsys, mocker):
@@ -336,3 +340,11 @@ class TestAuthCLI:
 
         message = capsys.readouterr()
         assert "invalid int value" in message.err
+
+    def test_request_arg_without_action(self, moulinette_cli, capsys, mocker):
+        with pytest.raises(SystemExit):
+            moulinette_cli.run(["testauth"], output_as="plain")
+
+        message = capsys.readouterr()
+
+        assert "error: the following arguments are required:" in message.err