diff --git a/homeassistant/components/duckdns/services.py b/homeassistant/components/duckdns/services.py
index 83534d26cec..ff2368a1467 100644
--- a/homeassistant/components/duckdns/services.py
+++ b/homeassistant/components/duckdns/services.py
@@ -8,7 +8,7 @@ import voluptuous as vol
 from homeassistant.const import CONF_ACCESS_TOKEN, CONF_DOMAIN
 from homeassistant.core import HomeAssistant, ServiceCall, callback
 from homeassistant.exceptions import HomeAssistantError, ServiceValidationError
-from homeassistant.helpers import config_validation as cv
+from homeassistant.helpers import config_validation as cv, service
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.selector import ConfigEntrySelector
 
@@ -47,13 +47,9 @@ def get_config_entry(
                 translation_domain=DOMAIN,
                 translation_key="entry_not_selected",
             )
-        return entries[0]
-    if not (entry := hass.config_entries.async_get_entry(entry_id)):
-        raise ServiceValidationError(
-            translation_domain=DOMAIN,
-            translation_key="entry_not_found",
-        )
-    return entry
+        entry_id = entries[0].entry_id
+
+    return service.async_get_config_entry(hass, DOMAIN, entry_id)
 
 
 async def update_domain_service(call: ServiceCall) -> None:
diff --git a/tests/components/duckdns/test_init.py b/tests/components/duckdns/test_init.py
index ffe3ceeba74..11e7dfbb9cf 100644
--- a/tests/components/duckdns/test_init.py
+++ b/tests/components/duckdns/test_init.py
@@ -172,8 +172,8 @@ async def test_service_clear_txt(
 @pytest.mark.parametrize(
     ("payload", "exception_msg"),
     [
-        ({ATTR_CONFIG_ENTRY: "1234"}, "Duck DNS integration entry not found"),
-        (None, "Duck DNS integration entry not selected"),
+        ({ATTR_CONFIG_ENTRY: "1234"}, "service_config_entry_not_found"),
+        (None, "entry_not_selected"),
     ],
 )
 @pytest.mark.usefixtures("setup_duckdns")
@@ -193,26 +193,21 @@ async def test_service_exceptions(
         entry_id="67890",
     ).add_to_hass(hass)
 
-    with pytest.raises(ServiceValidationError, match=exception_msg):
+    with pytest.raises(ServiceValidationError) as e:
         await hass.services.async_call(
             DOMAIN,
             SERVICE_SET_TXT,
             payload,
             blocking=True,
         )
+    assert e.value.translation_key == exception_msg
 
 
 @pytest.mark.parametrize(
     ("side_effect", "exception_msg"),
     [
-        (
-            False,
-            "Updating Duck DNS domain homeassistant failed",
-        ),
-        (
-            ClientError,
-            "Updating Duck DNS domain homeassistant failed due to a connection error",
-        ),
+        (False, "update_failed"),
+        (ClientError, "connection_error"),
     ],
 )
 @pytest.mark.usefixtures("setup_duckdns")
@@ -229,7 +224,7 @@ async def test_service_request_exception(
             "homeassistant.components.duckdns.services.update_duckdns",
             side_effect=[side_effect],
         ),
-        pytest.raises(HomeAssistantError, match=exception_msg),
+        pytest.raises(HomeAssistantError) as e,
     ):
         await hass.services.async_call(
             DOMAIN,
@@ -237,6 +232,7 @@ async def test_service_request_exception(
             {ATTR_CONFIG_ENTRY: config_entry.entry_id},
             blocking=True,
         )
+    assert e.value.translation_key == exception_msg
 
 
 @pytest.mark.usefixtures("setup_duckdns")
@@ -244,7 +240,7 @@ async def test_service_select_entry(
     hass: HomeAssistant, aioclient_mock: AiohttpClientMocker
 ) -> None:
     """Test config entry selection."""
-    MockConfigEntry(
+    config_entry = MockConfigEntry(
         domain=DOMAIN,
         title=f"{TEST_SUBDOMAIN}.duckdns.org",
         data={
@@ -252,7 +248,12 @@ async def test_service_select_entry(
             CONF_ACCESS_TOKEN: TEST_TOKEN,
         },
         entry_id="67890",
-    ).add_to_hass(hass)
+    )
+    config_entry.add_to_hass(hass)
+    assert await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    assert config_entry.state is ConfigEntryState.LOADED
 
     # Empty the fixture mock requests
     aioclient_mock.clear_requests()