diff --git a/homeassistant/components/device_tracker/unifi.py b/homeassistant/components/device_tracker/unifi.py
index 54aa9a5972c..72ea4f0902e 100644
--- a/homeassistant/components/device_tracker/unifi.py
+++ b/homeassistant/components/device_tracker/unifi.py
@@ -99,8 +99,8 @@ class UnifiScanner(DeviceScanner):
 
         # Filter clients to provided SSID list
         if self._ssid_filter:
-            clients = filter(lambda x: x['essid'] in self._ssid_filter,
-                             clients)
+            clients = [client for client in clients
+                       if client['essid'] in self._ssid_filter]
 
         self._clients = {
             client['mac']: client