diff --git a/homeassistant/components/motioneye/config_flow.py b/homeassistant/components/motioneye/config_flow.py
index 557025a58994..b80df4b75365 100644
--- a/homeassistant/components/motioneye/config_flow.py
+++ b/homeassistant/components/motioneye/config_flow.py
@@ -71,7 +71,7 @@ class MotionEyeConfigFlow(ConfigFlow, domain=DOMAIN):
                         **url_schema,
                         vol.Optional(
                             CONF_ADMIN_USERNAME,
-                            default=user_input.get(CONF_ADMIN_USERNAME),
+                            default=user_input.get(CONF_ADMIN_USERNAME, ""),
                         ): str,
                         vol.Optional(
                             CONF_ADMIN_PASSWORD,
@@ -79,7 +79,7 @@ class MotionEyeConfigFlow(ConfigFlow, domain=DOMAIN):
                         ): str,
                         vol.Optional(
                             CONF_SURVEILLANCE_USERNAME,
-                            default=user_input.get(CONF_SURVEILLANCE_USERNAME),
+                            default=user_input.get(CONF_SURVEILLANCE_USERNAME, ""),
                         ): str,
                         vol.Optional(
                             CONF_SURVEILLANCE_PASSWORD,
diff --git a/tests/components/motioneye/test_config_flow.py b/tests/components/motioneye/test_config_flow.py
index 7dbc851394a3..fbd8a0915681 100644
--- a/tests/components/motioneye/test_config_flow.py
+++ b/tests/components/motioneye/test_config_flow.py
@@ -7,6 +7,7 @@ from motioneye_client.client import (
     MotionEyeClientInvalidAuthError,
     MotionEyeClientRequestError,
 )
+import pytest
 
 from homeassistant import config_entries
 from homeassistant.components.motioneye.const import (
@@ -30,7 +31,44 @@ from . import TEST_URL, create_mock_motioneye_client, create_mock_motioneye_conf
 from tests.common import MockConfigEntry
 
 
-async def test_user_success(hass: HomeAssistant) -> None:
+@pytest.mark.parametrize(
+    ("user_input", "expected_data"),
+    [
+        pytest.param(
+            {
+                CONF_URL: TEST_URL,
+                CONF_ADMIN_USERNAME: "admin-username",
+                CONF_ADMIN_PASSWORD: "admin-password",
+                CONF_SURVEILLANCE_USERNAME: "surveillance-username",
+                CONF_SURVEILLANCE_PASSWORD: "surveillance-password",
+            },
+            {
+                CONF_URL: TEST_URL,
+                CONF_ADMIN_USERNAME: "admin-username",
+                CONF_ADMIN_PASSWORD: "admin-password",
+                CONF_SURVEILLANCE_USERNAME: "surveillance-username",
+                CONF_SURVEILLANCE_PASSWORD: "surveillance-password",
+            },
+            id="credentials",
+        ),
+        pytest.param(
+            {CONF_URL: TEST_URL},
+            {
+                CONF_URL: TEST_URL,
+                CONF_ADMIN_USERNAME: "",
+                CONF_ADMIN_PASSWORD: "",
+                CONF_SURVEILLANCE_USERNAME: "",
+                CONF_SURVEILLANCE_PASSWORD: "",
+            },
+            id="no_credentials",
+        ),
+    ],
+)
+async def test_user_success(
+    hass: HomeAssistant,
+    user_input: dict[str, str],
+    expected_data: dict[str, str],
+) -> None:
     """Test successful user flow."""
 
     result = await hass.config_entries.flow.async_init(
@@ -52,26 +90,13 @@ async def test_user_success(hass: HomeAssistant) -> None:
         ) as mock_setup_entry,
     ):
         result = await hass.config_entries.flow.async_configure(
-            result["flow_id"],
-            {
-                CONF_URL: TEST_URL,
-                CONF_ADMIN_USERNAME: "admin-username",
-                CONF_ADMIN_PASSWORD: "admin-password",
-                CONF_SURVEILLANCE_USERNAME: "surveillance-username",
-                CONF_SURVEILLANCE_PASSWORD: "surveillance-password",
-            },
+            result["flow_id"], user_input
         )
         await hass.async_block_till_done()
 
     assert result["type"] is FlowResultType.CREATE_ENTRY
     assert result["title"] == f"{TEST_URL}"
-    assert result["data"] == {
-        CONF_URL: TEST_URL,
-        CONF_ADMIN_USERNAME: "admin-username",
-        CONF_ADMIN_PASSWORD: "admin-password",
-        CONF_SURVEILLANCE_USERNAME: "surveillance-username",
-        CONF_SURVEILLANCE_PASSWORD: "surveillance-password",
-    }
+    assert result["data"] == expected_data
     assert len(mock_setup_entry.mock_calls) == 1
     assert mock_client.async_client_close.called