diff --git a/src/boringssl/gen_build_yaml.py b/src/boringssl/gen_build_yaml.py
index 0d4ad0bb8ccc580bc554550b7e291a1a2fd72658..424912ba70dd5a20063e6db5c6919243d7ee0262 100755
--- a/src/boringssl/gen_build_yaml.py
+++ b/src/boringssl/gen_build_yaml.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python2.7
-# Copyright 2015, Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
diff --git a/src/core/compression/algorithm.c b/src/core/compression/algorithm.c
index 51cd54f79a46efc7c61f83a075d91a0115a4595a..6f3a8eb28e63a37cacae8e1a8f118ba2358ecaa5 100644
--- a/src/core/compression/algorithm.c
+++ b/src/core/compression/algorithm.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/tools/distrib/check_copyright.py b/tools/distrib/check_copyright.py
index 2d46143585941d793b920ce8a44d224d31fa5ff7..f54e5fad807d9b4217d47609218df37e0ff4c54d 100755
--- a/tools/distrib/check_copyright.py
+++ b/tools/distrib/check_copyright.py
@@ -72,9 +72,9 @@ LICENSE_PREFIX = {
   '.php':       r'\s*\*\s*',
   '.js':        r'\s*\*\s*',
   '.py':        r'#\s*',
-  '.pyx':       r'# %s',
-  '.pxd':       r'# %s',
-  '.pxi':       r'# %s',
+  '.pyx':       r'#\s*',
+  '.pxd':       r'#\s*',
+  '.pxi':       r'#\s*',
   '.rb':        r'#\s*',
   '.sh':        r'#\s*',
   '.proto':     r'//\s*',