diff --git a/tests/components/system_bridge/test_config_flow.py b/tests/components/system_bridge/test_config_flow.py
index f8163eb98d9..ecc36641e6c 100644
--- a/tests/components/system_bridge/test_config_flow.py
+++ b/tests/components/system_bridge/test_config_flow.py
@@ -81,9 +81,7 @@ FIXTURE_BASE_URL = (
     f"http://{FIXTURE_USER_INPUT[CONF_HOST]}:{FIXTURE_USER_INPUT[CONF_PORT]}"
 )
 
-FIXTURE_ZEROCONF_BASE_URL = (
-    f"http://{FIXTURE_ZEROCONF[CONF_HOST]}:{FIXTURE_ZEROCONF[CONF_PORT]}"
-)
+FIXTURE_ZEROCONF_BASE_URL = f"http://{FIXTURE_ZEROCONF.host}:{FIXTURE_ZEROCONF.port}"
 
 
 async def test_user_flow(