diff --git a/core/src/zeit/speech/testing.py b/core/src/zeit/speech/testing.py
index 0292884d9c..ca4fee0e24 100644
--- a/core/src/zeit/speech/testing.py
+++ b/core/src/zeit/speech/testing.py
@@ -24,13 +24,13 @@
 TTS_CREATION_STARTED = {
     'event': 'AUDIO_CREATION_STARTED',
     'uuid': 'a89ce2e3-4887-466a-a52e-edc6b9802ef9',
-    'checksum': 'd751713988987e9331980363e24189ce',
+    'checksum': '54436411ba2288d0db073246c85e0f09',
 }
 
 TTS_CREATION_FAILED = {
     'event': 'AUDIO_CREATION_FAILED',
     'uuid': 'a89ce2e3-4887-466a-a52e-edc6b9802ef9',
-    'checksum': 'd751713988987e9331980363e24189ce',
+    'checksum': '54436411ba2288d0db073246c85e0f09',
     'reason': 'AudioStream must be a Buffer',
 }
 
@@ -40,7 +40,7 @@
     'articlesAudio': [
         {
             'type': 'FULL_TTS',
-            'checksum': 'd751713988987e9331980363e24189ce',
+            'checksum': '54436411ba2288d0db073246c85e0f09',
             'audioEntry': {
                 'uuid': 'e7fba272-c442-4cde-a5c9-3d75a89e5273',
                 'url': 'https://zon-speechbert/articles/a89ce2e3-4887-466a-a52e-edc6b9802ef9/full_1fd74183d02f50d5cd0731a5748019e95bbe68bd71f33cbd2c03c4d64c8a1d91a7f25f6725db6b19348bd94af09fc563.mp3',
@@ -49,7 +49,7 @@
         },
         {
             'type': 'PREVIEW_TTS',
-            'checksum': 'd751713988987e9331980363e24189ce',
+            'checksum': '54436411ba2288d0db073246c85e0f09',
             'audioEntry': {
                 'uuid': '58ff08f4-cef5-45eb-a980-064bd78c42df',
                 'url': 'https://zon-speechbert/articles/a89ce2e3-4887-466a-a52e-edc6b9802ef9/preview_1fd74183d02f50d5cd0731a5748019e95bbe68bd71f33cbd2c03c4d64c8a1d91a7f25f6725db6b19348bd94af09fc563.mp3',
@@ -83,8 +83,8 @@ def setUp(self):
         self.unique_id = (
             f'http://xml.zeit.de/tts/{current_date.strftime("%Y-%m")}/{TTS_CREATED["uuid"]}'
         )
-        self.article = ICMSContent('http://xml.zeit.de/online/2007/01/Somalia')
-        self.article_uid = 'http://xml.zeit.de/online/2007/01/Somalia'
+        self.article_uid = 'http://xml.zeit.de/online/2022/08/trockenheit'
+        self.article = ICMSContent(self.article_uid)
         IPublishInfo(self.article).urgent = True
         IPublish(self.article).publish(background=False)
 
diff --git a/core/src/zeit/speech/tests/test_connection.py b/core/src/zeit/speech/tests/test_connection.py
index e6afcefb6b..30b251d0f8 100644
--- a/core/src/zeit/speech/tests/test_connection.py
+++ b/core/src/zeit/speech/tests/test_connection.py
@@ -1,5 +1,4 @@
 from unittest import mock
-import copy
 
 import pytest
 import zope.security.management
@@ -32,28 +31,27 @@ def test_message_audio_created(self):
         )
         assert IPublishInfo(audio).published, 'Publish you fool!'
 
-    def _setup_speech_message(self, field, value):
-        tts_created = copy.deepcopy(TTS_CREATED)
-        tts_created['articlesAudio'][0][field] = value
-        return tts_created
-
     def test_update_existing_tts_audio(self):
         audio = self.create_audio(TTS_CREATED)
         created_time = ISemanticChange(audio).last_semantic_change
         assert ISpeechInfo(audio).checksum == TTS_CREATED['articlesAudio'][0]['checksum']
-        self.repository.connector.search_result = [(audio.uniqueId)]
-        tts_msg = self.setup_speech_message('checksum', 'cookiesandcake')
-        Speech().update(tts_msg)
+        self.repository.connector.search_result = [(self.article.uniqueId)]
+        tts_msg = self.setup_speech_message(
+            'audioEntry', {'url': 'http://example.com/cats.mp3', 'duration': 1000}
+        )
+        with mock.patch('zeit.speech.connection.Speech._find', return_value=audio):
+            Speech().update(tts_msg)
         updated_time = ISemanticChange(audio).last_semantic_change
         assert updated_time > created_time, 'Semantic time should be updated'
-        assert ISpeechInfo(audio).checksum == 'cookiesandcake', 'Update your checksum'
+        audio = ICMSContent(self.unique_id)
+        assert audio.duration == 1
 
     def test_update_broken_audio_repairs_reference_to_article(self):
+        self.repository.connector.search_result = [(self.article.uniqueId)]
         audio = Speech()._create(TTS_CREATED)
         IPublish(audio).publish(background=False)
         assert ICMSContent(self.unique_id)
         assert not IAudioReferences(ICMSContent(self.article_uid)).items
-        self.repository.connector.search_result = [(self.article.uniqueId)]
         with mock.patch('zeit.speech.connection.Speech._find', return_value=audio):
             Speech().update(TTS_CREATED)
         assert IAudioReferences(ICMSContent(self.article_uid)).items == (audio,)