diff --git a/homeassistant/components/telegram_bot/config_flow.py b/homeassistant/components/telegram_bot/config_flow.py
index 6d2ece6fe9c..e93aa80126d 100644
--- a/homeassistant/components/telegram_bot/config_flow.py
+++ b/homeassistant/components/telegram_bot/config_flow.py
@@ -237,9 +237,9 @@ class TelgramBotConfigFlow(ConfigFlow, domain=DOMAIN):
 
         # validate connection to Telegram API
         errors: dict[str, str] = {}
-        user_input[CONF_API_ENDPOINT] = (
-            user_input[SECTION_ADVANCED_SETTINGS][CONF_API_ENDPOINT],
-        )
+        user_input[CONF_API_ENDPOINT] = user_input[SECTION_ADVANCED_SETTINGS][
+            CONF_API_ENDPOINT
+        ]
         user_input[CONF_PROXY_URL] = user_input[SECTION_ADVANCED_SETTINGS].get(
             CONF_PROXY_URL
         )
diff --git a/tests/components/telegram_bot/test_config_flow.py b/tests/components/telegram_bot/test_config_flow.py
index add916db485..6d638600fa5 100644
--- a/tests/components/telegram_bot/test_config_flow.py
+++ b/tests/components/telegram_bot/test_config_flow.py
@@ -574,6 +574,7 @@ async def test_duplicate_entry(hass: HomeAssistant) -> None:
         assert result["type"] is FlowResultType.CREATE_ENTRY
         assert result["data"][CONF_PLATFORM] == PLATFORM_BROADCAST
         assert result["data"][CONF_API_KEY] == "mock api key"
+        assert result["data"][CONF_API_ENDPOINT] == "http://mock_api_endpoint"
         assert result["options"][ATTR_PARSER] == PARSER_MD
 
         # test: import 2nd entry failed due to duplicate