diff --git a/src/common/WiFiSettings/WiFiForm.js b/src/common/WiFiSettings/WiFiForm.js
index 4be8fc4..b9e1bc6 100644
--- a/src/common/WiFiSettings/WiFiForm.js
+++ b/src/common/WiFiSettings/WiFiForm.js
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 CZ.NIC z.s.p.o. (http://www.nic.cz/)
+ * Copyright (C) 2019-2021 CZ.NIC z.s.p.o. (http://www.nic.cz/)
  *
  * This is free software, licensed under the GNU General Public License v3.
  * See /LICENSE for more information.
@@ -163,6 +163,10 @@ function DeviceForm({
                                 [deviceIndex]: {
                                     hwmode: { $set: value },
                                     channel: { $set: "0" },
+                                    htmode: {
+                                        $set:
+                                            value === "11a" ? "VHT80" : "HT20",
+                                    },
                                 },
                             },
                         }))}