Index: test/clang-tidy/check_clang_tidy.py
===================================================================
--- test/clang-tidy/check_clang_tidy.py
+++ test/clang-tidy/check_clang_tidy.py
@@ -166,7 +166,7 @@
       subprocess.check_output(
           ['FileCheck', '-input-file=' + notes_file, input_file_name,
            '-check-prefix=' + check_notes_prefix,
-           '-implicit-check-not={{note|warning|error}}:'],
+           '-implicit-check-not={{note|error}}:'],
           stderr=subprocess.STDOUT)
     except subprocess.CalledProcessError as e:
       print('FileCheck failed:\n' + e.output.decode())