diff --git a/src/langbot/libs/dingtalk_api/a2ui.py b/src/langbot/libs/dingtalk_api/a2ui.py
index d6f5739c8..c2322da75 100644
--- a/src/langbot/libs/dingtalk_api/a2ui.py
+++ b/src/langbot/libs/dingtalk_api/a2ui.py
@@ -36,9 +36,8 @@ def brand_components() -> list[dict[str, typing.Any]]:
         },
         {
             'id': 'langbot-brand-link',
-            'component': 'Link',
-            'text': 'LangBot',
-            'action': {'functionCall': {'call': 'openUrl', 'args': {'url': LANGBOT_CARD_URL}}},
+            'component': 'Markdown',
+            'content': f'[LangBot]({LANGBOT_CARD_URL})',
         },
     ]
 
diff --git a/tests/unit_tests/platform/test_dingtalk_api.py b/tests/unit_tests/platform/test_dingtalk_api.py
index f7a5b7824..05a4eadcc 100644
--- a/tests/unit_tests/platform/test_dingtalk_api.py
+++ b/tests/unit_tests/platform/test_dingtalk_api.py
@@ -39,10 +39,10 @@ def test_text_card_keeps_brand_when_content_updates():
     assert by_id['langbot-brand']['children'] == ['langbot-brand-icon', 'langbot-brand-link']
     assert by_id['langbot-brand-icon']['url'] == 'https://langbot.app/logo-blue.png'
     assert by_id['langbot-brand-icon']['previewEnabled'] is False
-    assert by_id['langbot-brand-link']['action']['functionCall'] == {
-        'call': 'openUrl',
-        'args': {'url': 'https://langbot.app?utm_source=dingtalk&utm_medium=bot_card&utm_campaign=langbot'},
-    }
+    assert by_id['langbot-brand-link']['component'] == 'Markdown'
+    assert by_id['langbot-brand-link']['content'] == (
+        '[LangBot](https://langbot.app?utm_source=dingtalk&utm_medium=bot_card&utm_campaign=langbot)'
+    )
     assert update_text_card_messages('surface-id', 'done')[0]['updateDataModel']['path'] == '/content'