diff --git a/tests/performance-tests/agent-performance-tests-k6/webpack.config.js b/tests/performance-tests/agent-performance-tests-k6/webpack.config.js
index 94fe2bcdff..cc145ae88c 100644
--- a/tests/performance-tests/agent-performance-tests-k6/webpack.config.js
+++ b/tests/performance-tests/agent-performance-tests-k6/webpack.config.js
@@ -24,7 +24,7 @@ module.exports = {
     ],
   },
   target: 'web',
-  externals: /^(k6|https?\:\/\/)(\/.*)?/,
+  externals: /^(k6|https?:\/\/)(\/.*)?/,
   // Generate map files for compiled scripts
   devtool: "source-map",
   stats: {