diff --git a/crates/ezidam/src/oauth.rs b/crates/ezidam/src/oauth.rs
index a635b61..61a204a 100644
--- a/crates/ezidam/src/oauth.rs
+++ b/crates/ezidam/src/oauth.rs
@@ -11,7 +11,7 @@ pub enum ResponseMode {
 #[derive(Debug, FromForm, UriDisplayQuery)]
 pub struct AuthenticationRequest<'r> {
     pub response_type: &'r str,
-    pub response_mode: ResponseMode,
+    pub response_mode: Option<ResponseMode>,
     pub scope: &'r str,
     pub client_id: &'r str,
     pub redirect_uri: &'r str,
diff --git a/crates/ezidam/src/routes/oauth/authorize.rs b/crates/ezidam/src/routes/oauth/authorize.rs
index 5c91dcd..7f1646b 100644
--- a/crates/ezidam/src/routes/oauth/authorize.rs
+++ b/crates/ezidam/src/routes/oauth/authorize.rs
@@ -54,7 +54,7 @@ pub async fn authorize_ezidam(mut db: Connection<Database>) -> Result<Redirect>
 
     let request = AuthenticationRequest {
         response_type: openid::CoreResponseType::Code.as_ref(),
-        response_mode: ResponseMode::Query,
+        response_mode: Some(ResponseMode::Query),
         scope: &openid::SupportedScopes::url_format(),
         client_id: app.id().as_ref(),
         redirect_uri: app.redirect_uri(),
@@ -165,7 +165,7 @@ pub async fn authorize_form(
 
     // Construct uri to redirect to
     let uri = {
-        let uri_mode = match auth_request.response_mode {
+        let uri_mode = match auth_request.response_mode.unwrap_or(ResponseMode::Query) {
             ResponseMode::Query => "?",
             ResponseMode::Fragment => "#",
         };