diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 7f4af43c81b09..cefb599b18b10 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -309,7 +309,7 @@ def _CheckNoNewWStrings(input_api, output_api):
   problems = []
   for f in input_api.AffectedFiles():
     if (not f.LocalPath().endswith(('.cc', '.h')) or
-        f.LocalPath().endswith('test.cc')):
+        f.LocalPath().endswith(('test.cc', '_win.cc', '_win.h'))):
       continue
 
     allowWString = False