diff --git a/tests/components/devolo_home_control/test_config_flow.py b/tests/components/devolo_home_control/test_config_flow.py
index dd856d2e6b5..7d2c9ce40f6 100644
--- a/tests/components/devolo_home_control/test_config_flow.py
+++ b/tests/components/devolo_home_control/test_config_flow.py
@@ -1,6 +1,8 @@
 """Test the devolo_home_control config flow."""
 from unittest.mock import patch
 
+import pytest
+
 from homeassistant import config_entries, data_entry_flow, setup
 from homeassistant.components.devolo_home_control.const import DOMAIN
 from homeassistant.config_entries import SOURCE_USER
@@ -24,9 +26,6 @@ async def test_form(hass):
         "homeassistant.components.devolo_home_control.async_setup_entry",
         return_value=True,
     ) as mock_setup_entry, patch(
-        "homeassistant.components.devolo_home_control.config_flow.Mydevolo.credentials_valid",
-        return_value=True,
-    ), patch(
         "homeassistant.components.devolo_home_control.config_flow.Mydevolo.uuid",
         return_value="123456",
     ):
@@ -48,6 +47,7 @@ async def test_form(hass):
     assert len(mock_setup_entry.mock_calls) == 1
 
 
+@pytest.mark.credentials_invalid
 async def test_form_invalid_credentials(hass):
     """Test if we get the error message on invalid credentials."""
     await setup.async_setup_component(hass, "persistent_notification", {})
@@ -57,16 +57,12 @@ async def test_form_invalid_credentials(hass):
     assert result["type"] == "form"
     assert result["errors"] == {}
 
-    with patch(
-        "homeassistant.components.devolo_home_control.config_flow.Mydevolo.credentials_valid",
-        return_value=False,
-    ):
-        result = await hass.config_entries.flow.async_configure(
-            result["flow_id"],
-            {"username": "test-username", "password": "test-password"},
-        )
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {"username": "test-username", "password": "test-password"},
+    )
 
-        assert result["errors"] == {"base": "invalid_auth"}
+    assert result["errors"] == {"base": "invalid_auth"}
 
 
 async def test_form_already_configured(hass):
@@ -74,9 +70,6 @@ async def test_form_already_configured(hass):
     with patch(
         "homeassistant.components.devolo_home_control.config_flow.Mydevolo.uuid",
         return_value="123456",
-    ), patch(
-        "homeassistant.components.devolo_home_control.config_flow.Mydevolo.credentials_valid",
-        return_value=True,
     ):
         MockConfigEntry(domain=DOMAIN, unique_id="123456", data={}).add_to_hass(hass)
         result = await hass.config_entries.flow.async_init(
@@ -103,9 +96,6 @@ async def test_form_advanced_options(hass):
         "homeassistant.components.devolo_home_control.async_setup_entry",
         return_value=True,
     ) as mock_setup_entry, patch(
-        "homeassistant.components.devolo_home_control.config_flow.Mydevolo.credentials_valid",
-        return_value=True,
-    ), patch(
         "homeassistant.components.devolo_home_control.config_flow.Mydevolo.uuid",
         return_value="123456",
     ):