diff --git a/Gruntfile.js b/Gruntfile.js
index 8a5a414aeca7..2d25d080bda1 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -146,7 +146,7 @@ module.exports = function(grunt) {
     },
     jscs: {
       all: {
-        src: ['js/**/*.js', '!js/libtextsecure.js', '!js/components.js', 'test/**/*.js']
+        src: ['js/**/*.js', '!js/libtextsecure.js', '!js/key_worker.js', '!js/components.js', 'test/**/*.js']
       }
     },
     watch: {