diff --git a/brightray/script/cpplint b/brightray/script/cpplint
index 18e7ef7b3f15..69b7aaff9a00 100755
--- a/brightray/script/cpplint
+++ b/brightray/script/cpplint
@@ -10,7 +10,7 @@ SOURCE_ROOT = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
 CPPLINT = os.path.join(SOURCE_ROOT, 'vendor', 'google-styleguide', 'trunk', 'cpplint', 'cpplint.py')
 
 IGNORED_FILES = [
-    'browser/mac/bry_inspectable_web_contents_view_private.h',
+    os.path.join('browser', 'mac', 'bry_inspectable_web_contents_view_private.h'),
 ]
 
 FILTERS = [