diff --git a/custom_components/deltadore_tydom/tydom/tydom_client.py b/custom_components/deltadore_tydom/tydom/tydom_client.py
index 9c1357c..f03d958 100644
--- a/custom_components/deltadore_tydom/tydom/tydom_client.py
+++ b/custom_components/deltadore_tydom/tydom/tydom_client.py
@@ -525,12 +525,12 @@ async def get_poll_device_data(self, url):
 
     def add_poll_device_url_1s(self, url):
         """Add a device for polling."""
-        if not url in self.poll_device_urls_1s:
+        if url not in self.poll_device_urls_1s:
             self.poll_device_urls_1s.append(url)
 
     def add_poll_device_url_5m(self, url):
         """Add a device for polling."""
-        if not url in self.poll_device_urls_5m:
+        if url not in self.poll_device_urls_5m:
             self.poll_device_urls_5m.append(url)
 
     async def get_moments(self):