diff --git a/stryker.conf.js b/stryker.conf.js
index 51078e5..67dc47b 100644
--- a/stryker.conf.js
+++ b/stryker.conf.js
@@ -19,7 +19,7 @@ module.exports = {
   testRunner:        'jasmine',
   jasmineConfigFile: 'jasmine.json',
   coverageAnalysis:  'perTest',
-  mutate: [
+  mutate:            [
     '**/*.js',
     '**/*.ts',
     '!**/test/**/*',