diff --git a/src/HABApp/config/models/mqtt.py b/src/HABApp/config/models/mqtt.py
index 2cdbbbbd..776f5331 100644
--- a/src/HABApp/config/models/mqtt.py
+++ b/src/HABApp/config/models/mqtt.py
@@ -30,6 +30,7 @@ class Connection(BaseModel):
     password: str = ''
     tls: TLSSettings = Field(default_factory=TLSSettings)
 
+    # implemented 2024.02.0
     @pydantic.model_validator(mode='before')
     @classmethod
     def _migrate_client_id(cls, data):
@@ -52,6 +53,30 @@ def get_topic_qos(self) -> Generator[tuple[str, QOS], None, None]:
             else:
                 yield obj
 
+    # Implemented 2024.11.0
+    @pydantic.model_validator(mode='before')
+    @classmethod
+    def _migrate_topics(cls, data):
+        if isinstance(data, dict) and (topics := data.get('topics', [])) is not None:
+            for i, topic_obj in enumerate(topics):
+                if not isinstance(topic_obj, list):
+                    continue
+                topic, qos = topic_obj
+                if qos is not None:
+                    continue
+
+                log = logging.getLogger('HABApp.Config')
+                log.warning('Empty QoS is not longer allowed for subscribing to topics.')
+                log.warning('Specify QOS or remove empty entry, e.g from')
+                log.warning(f'  - - {topic:s}')
+                log.warning('    - ')
+                log.warning('to')
+                log.warning(f'  - {topic:s}')
+
+                topics[i] = topic
+
+        return data
+
 
 class Publish(BaseModel):
     qos: QOS = Field(default=0, description='Default QoS when publishing values')
diff --git a/tests/test_config/test_config.py b/tests/test_config/test_config.py
index 6a3cfefe..d3e50bc2 100644
--- a/tests/test_config/test_config.py
+++ b/tests/test_config/test_config.py
@@ -1,6 +1,14 @@
+import logging
 import re
 
+import pytest
+from pydantic import ValidationError
+
 from HABApp import CONFIG
+from easyconfig.yaml import yaml_safe
+
+from HABApp.config.models.mqtt import Subscribe
+from tests.helpers import LogCollector
 
 
 def test_default_file() -> None:
@@ -55,3 +63,29 @@ def test_default_file() -> None:
     item: HABApp_Ping  # Name of the Numberitem
     interval: 10       # Seconds between two pings
 '''
+
+
+def test_migrate(test_logs: LogCollector):
+    text = '''
+  subscribe:
+    qos: 0   # Default QoS for subscribing
+    topics:
+    - - '#'
+      - 
+  publish:
+    '''
+
+    obj = yaml_safe.load(text)
+    Subscribe.model_validate(obj['subscribe'])
+
+    test_logs.add_expected(
+        'HABApp.Config', logging.WARNING,
+        [
+            'Empty QoS is not longer allowed for subscribing to topics.',
+            'Specify QOS or remove empty entry, e.g from',
+            '  - - #',
+            '    - ',
+            'to',
+            '  - #',
+        ]
+    )