diff --git a/tests/components/wiffi/conftest.py b/tests/components/wiffi/conftest.py
new file mode 100644
index 00000000000..bceded737c6
--- /dev/null
+++ b/tests/components/wiffi/conftest.py
@@ -0,0 +1,14 @@
+"""Configuration for Wiffi tests."""
+from collections.abc import Generator
+from unittest.mock import AsyncMock, patch
+
+import pytest
+
+
+@pytest.fixture
+def mock_setup_entry() -> Generator[AsyncMock, None, None]:
+    """Override async_setup_entry."""
+    with patch(
+        "homeassistant.components.wiffi.async_setup_entry", return_value=True
+    ) as mock_setup_entry:
+        yield mock_setup_entry
diff --git a/tests/components/wiffi/test_config_flow.py b/tests/components/wiffi/test_config_flow.py
index 0c069180e89..bf0b072df8c 100644
--- a/tests/components/wiffi/test_config_flow.py
+++ b/tests/components/wiffi/test_config_flow.py
@@ -14,6 +14,8 @@ from tests.common import MockConfigEntry
 
 MOCK_CONFIG = {CONF_PORT: 8765}
 
+pytestmark = pytest.mark.usefixtures("mock_setup_entry")
+
 
 @pytest.fixture(name="dummy_tcp_server")
 def mock_dummy_tcp_server():