diff --git a/README.md b/README.md
index 026cc2f..5610ade 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,7 @@ These options can be configured by setting environment variables using `-e KEY="
 | `PASSWORD` | - | `foobar123` | When set, requires a password when logging in to the Web UI. |
 | `WG_HOST` | - | `vpn.myserver.com` | The public hostname of your VPN server. |
 | `WG_PORT` | `51820` | `12345` | The public UDP port of your VPN server. WireGuard will always listen on `51820` inside the Docker container. |
+| `WG_MTU` | `null` | `1420` | The MTU the clients will use. Server uses default WG MTU. |
 | `WG_PERSISTENT_KEEPALIVE` | `0` | `25` | Value in seconds to keep the "connection" open. |
 | `WG_DEFAULT_ADDRESS` | `10.8.0.x` | `10.6.0.x` | Clients IP address range. |
 | `WG_DEFAULT_DNS` | `1.1.1.1` | `8.8.8.8, 8.8.4.4` | DNS server clients will use. |
diff --git a/docker-compose.yml b/docker-compose.yml
index 601ccf9..0a13acc 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -11,6 +11,7 @@ services:
       # - WG_PORT=51820
       # - WG_DEFAULT_ADDRESS=10.8.0.x
       # - WG_DEFAULT_DNS=1.1.1.1
+      # - WG_MTU=1420
       # - WG_ALLOWED_IPS=192.168.15.0/24, 10.0.1.0/24
       
     image: weejewel/wg-easy
diff --git a/src/config.js b/src/config.js
index d9cf5af..9811c90 100644
--- a/src/config.js
+++ b/src/config.js
@@ -8,6 +8,7 @@ module.exports.PASSWORD = process.env.PASSWORD;
 module.exports.WG_PATH = process.env.WG_PATH || '/etc/wireguard/';
 module.exports.WG_HOST = process.env.WG_HOST;
 module.exports.WG_PORT = process.env.WG_PORT || 51820;
+module.exports.WG_MTU = process.env.WG_MTU || null;
 module.exports.WG_PERSISTENT_KEEPALIVE = process.env.WG_PERSISTENT_KEEPALIVE || 0;
 module.exports.WG_DEFAULT_ADDRESS = process.env.WG_DEFAULT_ADDRESS || '10.8.0.x';
 module.exports.WG_DEFAULT_DNS = typeof process.env.WG_DEFAULT_DNS === 'string'
diff --git a/src/lib/WireGuard.js b/src/lib/WireGuard.js
index 3722273..0f11ebe 100644
--- a/src/lib/WireGuard.js
+++ b/src/lib/WireGuard.js
@@ -14,6 +14,7 @@ const {
   WG_PATH,
   WG_HOST,
   WG_PORT,
+  WG_MTU,
   WG_DEFAULT_DNS,
   WG_DEFAULT_ADDRESS,
   WG_PERSISTENT_KEEPALIVE,
@@ -191,6 +192,9 @@ AllowedIPs = ${client.address}/32`;
 PrivateKey = ${client.privateKey}
 Address = ${client.address}/24
 ${WG_DEFAULT_DNS ? `DNS = ${WG_DEFAULT_DNS}` : ''}
+if (typeof ${WG_MTU} !== 'undefined' || ${WG_MTU} !== null) {
+MTU = ${WG_MTU}
+}
 
 [Peer]
 PublicKey = ${config.server.publicKey}