diff --git a/karma.conf.js b/karma.conf.js
index faa8beea2..1ea17475a 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -81,12 +81,5 @@ module.exports = (config) => {
     singleRun: true,
   };
 
-  if (process.env.TEST_BROWSER_NAME === 'ChromeHeadless') {
-    let os = require('os');
-    if (os.platform() === 'win32') {
-      my_conf.client.mocha['timeout'] = 5000;
-    }
-  }
-
   config.set(my_conf);
 };