diff --git a/index.js b/index.js
index 17722be..bfc4798 100644
--- a/index.js
+++ b/index.js
@@ -38,6 +38,9 @@ app.use((req, res, next) => {
 })
 
 global.auth = (req, res, next) => {
+	if(!process.env.API_KEY) {
+		return next(); // No API key set, allow all requests
+	}
 	if (process.env.API_KEY && req.headers['Authorization'] === process.env.API_KEY) {
 		return next();
 	}