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",
+                                    },
                                 },
                             },
                         }))}
diff --git a/src/common/WiFiSettings/__tests__/WiFiSettings.test.js b/src/common/WiFiSettings/__tests__/WiFiSettings.test.js
index 7f533c2..6dd75d0 100644
--- a/src/common/WiFiSettings/__tests__/WiFiSettings.test.js
+++ b/src/common/WiFiSettings/__tests__/WiFiSettings.test.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.
@@ -116,7 +116,7 @@ describe("<WiFiSettings/>", () => {
                     enabled: true,
                     guest_wifi: { enabled: false },
                     hidden: false,
-                    htmode: "HT40",
+                    htmode: "HT80",
                     hwmode: "11a",
                     id: 0,
                     password: "TestPass",
@@ -145,7 +145,7 @@ describe("<WiFiSettings/>", () => {
                     enabled: true,
                     guest_wifi: { enabled: false },
                     hidden: false,
-                    htmode: "HT40",
+                    htmode: "HT20",
                     hwmode: "11g",
                     id: 0,
                     password: "TestPass",
@@ -181,7 +181,7 @@ describe("<WiFiSettings/>", () => {
                         password: "test_password",
                     },
                     hidden: false,
-                    htmode: "HT40",
+                    htmode: "HT80",
                     hwmode: "11a",
                     id: 0,
                     password: "TestPass",
diff --git a/src/common/WiFiSettings/__tests__/__fixtures__/wifiSettings.js b/src/common/WiFiSettings/__tests__/__fixtures__/wifiSettings.js
index 5b45398..0e9b74f 100644
--- a/src/common/WiFiSettings/__tests__/__fixtures__/wifiSettings.js
+++ b/src/common/WiFiSettings/__tests__/__fixtures__/wifiSettings.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.
@@ -226,7 +226,7 @@ export function wifiSettingsFixture() {
                     password: "",
                 },
                 hidden: false,
-                htmode: "HT40",
+                htmode: "HT80",
                 hwmode: "11a",
                 id: 0,
                 password: "TestPass",