diff --git a/src/config.rs b/src/config.rs
index 1d96e71..5121258 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -57,6 +57,7 @@ pub struct Strings {
 
 #[derive(Deserialize)]
 pub struct Config {
+    pub lang: String,
     pub path_prefix: String,
     pub socket_address: SocketAddress,
     pub email_server: EmailServer,
diff --git a/src/routes.rs b/src/routes.rs
index 20ba812..f9d150a 100644
--- a/src/routes.rs
+++ b/src/routes.rs
@@ -46,7 +46,10 @@ pub async fn render_contact_form(params: IndexParams<'_>) -> Result<Response, er
         .store_solution(&captcha.chars_as_string());
 
     let template = templates::ContactForm {
-        path_prefix: &params.config.path_prefix,
+        base: templates::Base {
+            lang: &params.config.lang,
+            path_prefix: &params.config.path_prefix,
+        },
         was_validated: params.was_validated,
         id,
         name: params.name.unwrap_or_default(),
@@ -124,7 +127,10 @@ pub async fn success(config: Arc<config::Config>) -> Result<Response, errors::Ap
     info!("Successful contact form submission");
 
     let template = templates::Success {
-        path_prefix: &config.path_prefix,
+        base: templates::Base {
+            lang: &config.lang,
+            path_prefix: &config.path_prefix,
+        },
         message: &config.strings.success,
     };
 
diff --git a/src/templates.rs b/src/templates.rs
index 3504ead..ca82924 100644
--- a/src/templates.rs
+++ b/src/templates.rs
@@ -2,10 +2,15 @@ use askama::Template;
 
 use crate::config;
 
+pub struct Base<'a> {
+    pub lang: &'a str,
+    pub path_prefix: &'a str,
+}
+
 #[derive(Template)]
 #[template(path = "contact_form.askama.html")]
 pub struct ContactForm<'a> {
-    pub path_prefix: &'a str,
+    pub base: Base<'a>,
     pub was_validated: bool,
     pub id: u16,
     pub name: String,
@@ -20,6 +25,6 @@ pub struct ContactForm<'a> {
 #[derive(Template)]
 #[template(path = "success.askama.html")]
 pub struct Success<'a> {
-    pub path_prefix: &'a str,
+    pub base: Base<'a>,
     pub message: &'a str,
 }
diff --git a/templates/base.askama.html b/templates/base.askama.html
index dbda384..b0d62e5 100644
--- a/templates/base.askama.html
+++ b/templates/base.askama.html
@@ -1,5 +1,5 @@
 <!doctype html>
-<html lang="en">
+<html lang="{{ base.lang }}">
     <head>
         <meta charset="utf-8">
         <meta name="viewport" content="width=device-width, initial-scale=1">
@@ -8,7 +8,7 @@
 
         {% block styles %}{% endblock %}
 
-        <link href="{{ path_prefix }}/static/bootstrap/bootstrap.min.css"
+        <link href="{{ base.path_prefix }}/static/bootstrap/bootstrap.min.css"
               rel="stylesheet"/>
     </head>
     <body>
@@ -16,6 +16,6 @@
 
         {% block scripts %}{% endblock %}
 
-        <script src="{{ path_prefix }}/static/bootstrap/bootstrap.bundle.min.js"></script>
+        <script src="{{ base.path_prefix }}/static/bootstrap/bootstrap.bundle.min.js"></script>
     </body>
 </html>
diff --git a/templates/contact_form.askama.html b/templates/contact_form.askama.html
index 4654db0..cf51617 100644
--- a/templates/contact_form.askama.html
+++ b/templates/contact_form.askama.html
@@ -6,7 +6,7 @@
     <h2>{{ strings.title }}</h2>
 
     <form id="contact-form"
-          action="{{ path_prefix }}/"
+          action="{{ base.path_prefix }}/"
           method="post"
           {% if was_validated %} class="was-validated"{% endif %}
           novalidate>
@@ -42,7 +42,12 @@
         </div>
         <div class="mb-5">
             <label for="message" class="form-label">{{ strings.message_field.label }}</label>
-            <textarea name="message" rows="5" class="form-control" id="message" style="resize: none;" required>{{ message }}</textarea>
+            <textarea name="message"
+                      rows="5"
+                      class="form-control"
+                      id="message"
+                      style="resize: none"
+                      required>{{ message }}</textarea>
             <div class="invalid-feedback">{{ strings.message_field.invalid_feedback }}</div>
         </div>
 
