diff --git a/examples/canvas/webpack.config.js b/examples/canvas/webpack.config.js
index 81543601..b94b38fd 100644
--- a/examples/canvas/webpack.config.js
+++ b/examples/canvas/webpack.config.js
@@ -17,7 +17,7 @@ module.exports = {
       type: "https", // or use 'https'
       options: {
         ca: fs.readFileSync("cert/ca.crt"),
-        key: fs.readFileSync("cert/key.crt"),
+        key: fs.readFileSync("cert/cert.key"),
         cert: fs.readFileSync("cert/cert.crt"),
       },
     },