diff --git a/src/i18n.rs b/src/i18n.rs
index 2cf5f427..96c699f4 100644
--- a/src/i18n.rs
+++ b/src/i18n.rs
@@ -53,11 +53,11 @@ impl Fairing for I18n {
     }
 }
 
-fn tera_gettext(ctx: HashMap<String, serde_json::Value>) -> Result<serde_json::Value, TeraError> {
-    let trans = gettext(ctx.get("t").unwrap().as_str().unwrap());
+fn tera_gettext(msg: serde_json::Value, ctx: HashMap<String, serde_json::Value>) -> Result<serde_json::Value, TeraError> {
+    let trans = gettext(msg.as_str().unwrap());
     Ok(serde_json::Value::String(Tera::one_off(trans.as_ref(), &ctx, false).unwrap_or(String::from(""))))
 }
 
 pub fn tera(t: &mut Tera) {
-    t.register_global_function("_", Box::new(tera_gettext))
+    t.register_filter("_", tera_gettext)
 }
diff --git a/templates/instance/index.html.tera b/templates/instance/index.html.tera
index 28cbe06a..b859fc8c 100644
--- a/templates/instance/index.html.tera
+++ b/templates/instance/index.html.tera
@@ -6,7 +6,7 @@
 {% endblock title %}
 
 {% block content %}
-    <h1>{{ _(t="Welcome on {{ instance_name }}", instance_name=instance.name) }}</h1>
+    <h1>{{ "Welcome on {{ instance_name }}" | _(instance_name=instance.name) }}</h1>
 
     <h2>Latest articles</h2>
     <div class="cards">