diff --git a/networkconfig.py b/networkconfig.py
index 816a0cb..f8e1a08 100644
--- a/networkconfig.py
+++ b/networkconfig.py
@@ -214,7 +214,7 @@ def start(port=80):
     wlan_sta.active(True)
     wlan_ap.active(True)
 
-    wlan_ap.config(essid=ssid_name, password=ssid_password)
+    wlan_ap.config(essid=ssid_name, password=ssid_password, authmode=3)  # WPA2
 
     server_socket = socket.socket()
     server_socket.bind(addr)