diff --git a/routes/order.js b/routes/order.js
index 9ad4754..988ffa4 100644
--- a/routes/order.js
+++ b/routes/order.js
@@ -28,9 +28,14 @@ router.post("/", async (req, res) => {
 }).post("/callback", async (req, res) => {
     await lyfPay.checkPayment(req, res);
 }).get("/retry", async (req, res) => {
-    let order = await models.Order.findByPk(req.session.lastOrder.id);
+    if (!req.session || !req.session.lastOrder)
+        return error(req, res, "Can't retrieve last order", 400);
+
+    req.body.payment = req.session.lastOrder[1];
+
+    let order = await models.Order.findByPk(req.session.lastOrder[0].id);
     if (!order)
-            return error(req, res, "Can't retrieve last order", 400);
+            return error(req, res, "Last order doesn't exist", 400);
     else
         await lyfPay.sendPayment(req, res, order);
 
diff --git a/routes/utils/lyfPay.js b/routes/utils/lyfPay.js
index 4f87145..faaec30 100644
--- a/routes/utils/lyfPay.js
+++ b/routes/utils/lyfPay.js
@@ -63,7 +63,7 @@ async function sendPayment(req, res, order) {
 
     params.mac = macCalculator(params, config.secureKey);
     params.additionalDataEncoded = Buffer.from(params.additionalData).toString("base64");
-    params.additionalData = undefined;
+    delete params.additionalData;
     if (req.body.payment === "creditCard")
         params.version = "v2.0";
 
@@ -71,7 +71,7 @@ async function sendPayment(req, res, order) {
         .map(k => encodeURIComponent(k) + "=" + encodeURIComponent(params[k]))
         .join("&");
 
-    req.session.lastOrder = order;
+    req.session.lastOrder = [order, req.body.payment];
 
     res.redirect(307, url);
 }