diff --git a/build/tasks/build-task.coffee b/build/tasks/build-task.coffee
index 7adbaf19a..cfa7f47a4 100644
--- a/build/tasks/build-task.coffee
+++ b/build/tasks/build-task.coffee
@@ -129,6 +129,8 @@ module.exports = (grunt) ->
     ignoredPaths.push "#{_.escapeRegExp(path.join('runas', 'src') + path.sep)}.*\\.(cc|h)*"
     ignoredPaths.push "#{_.escapeRegExp(path.join('scrollbar-style', 'src') + path.sep)}.*\\.(cc|h)*"
     ignoredPaths.push "#{_.escapeRegExp(path.join('spellchecker', 'src') + path.sep)}.*\\.(cc|h)*"
+    ignoredPaths.push "#{_.escapeRegExp(path.join('cached-run-in-this-context', 'src') + path.sep)}.*\\.(cc|h)?"
+    ignoredPaths.push "#{_.escapeRegExp(path.join('marker-index', 'src') + path.sep)}.*\\.(cc|h)?"
     ignoredPaths.push "#{_.escapeRegExp(path.join('keyboard-layout', 'src') + path.sep)}.*\\.(cc|h|mm)*"
 
     # Ignore build files