diff --git a/assets/stryker.js b/assets/stryker.js
index 5c4c792..2d74168 100644
--- a/assets/stryker.js
+++ b/assets/stryker.js
@@ -21,11 +21,12 @@ module.exports = {
   testRunner:        'jasmine',
   jasmineConfigFile: 'jasmine.json',
   coverageAnalysis:  'perTest',
-  mutate:            [
+  mutate: [
     '**/*.js',
     '**/*.ts',
-    '!**/node_modules/',
-    '!**/spec/'
+    '!**/test/**/*',
+    '!**/spec/**/*',
+    '!stryker.conf.js'
   ]
 };
 `;
diff --git a/package.json b/package.json
index d250a7c..25c644b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@sapphirecode/standard",
-  "version": "1.5.2",
+  "version": "1.5.3",
   "main": "index.js",
   "author": {
     "name": "Timo Hocker",