diff --git a/discovery.py b/discovery.py
index ecdeb7f..23e9fd6 100644
--- a/discovery.py
+++ b/discovery.py
@@ -67,7 +67,8 @@ async def start(self):
 			self.aiozc.zeroconf, ["_shelly._tcp.local."], handlers=[self.on_service_state_change]
 		)
 
-		self._start_add_by_ip_address_task(ip_addresses)
+		if ip_addresses:
+			self._start_add_by_ip_address_task(ip_addresses)
 
 		await self.bus.wait_for_disconnect()