diff --git a/src/index.js b/src/index.js
index 3e4248b..c5f9b2c 100644
--- a/src/index.js
+++ b/src/index.js
@@ -168,6 +168,11 @@ app.post('/depesche', async (req, res) => {
 	}
 
 	console.log("[INFO] Received print request");
+
+	if (req.body.foreign_id == "") {
+		req.body.foreign_id = "undefined"
+	}
+
 	let value = {}
 	try {
 		value = await schema.validateAsync(req.body, { allowUnknown: true });
@@ -181,6 +186,7 @@ app.post('/depesche', async (req, res) => {
 	}
 
 
+
 	await main(value).catch(
 		(err) => {
 			console.log(err);