diff --git a/spec/support/karma.conf.js b/spec/support/karma.conf.js
index ccc4fb9..ca9131e 100644
--- a/spec/support/karma.conf.js
+++ b/spec/support/karma.conf.js
@@ -24,9 +24,6 @@ module.exports = (config) => {
config.set({
basePath: '../..',
- // See https://github.com/karma-runner/karma/pull/2834
- customContextFile: 'spec/support/karma_context.html',
-
detectBrowsers: {
postDetection: (browsers) => browsers.filter(is_supported_browser),
preferHeadless: true,
diff --git a/spec/support/karma_context.html b/spec/support/karma_context.html
deleted file mode 100644
index 2a9682a..0000000
--- a/spec/support/karma_context.html
+++ /dev/null
@@ -1,27 +0,0 @@
-
-
-
-
-
-
-
-
-
-
-
- %SCRIPTS%
-
-
-
-