diff --git a/tools/git_util.py b/tools/git_util.py
index 62c9d6774..91e495959 100644
--- a/tools/git_util.py
+++ b/tools/git_util.py
@@ -9,7 +9,7 @@ def is_checkout(path):
   """ Returns true if the path represents a git checkout. """
   return os.path.exists(os.path.join(path, '.git'))
 
-def get_hash(path = '.', branch = 'master'):
+def get_hash(path = '.', branch = 'HEAD'):
   """ Returns the git hash for the specified branch/tag/hash. """
   cmd = "git rev-parse %s" % (branch)
   result = exec_cmd(cmd, path)
@@ -25,7 +25,7 @@ def get_url(path = '.'):
     return result['out'].strip()
   return 'Unknown'
 
-def get_svn_revision(path = '.', branch = 'master'):
+def get_svn_revision(path = '.', branch = 'HEAD'):
   """ Returns the SVN revision associated with the specified path and git
       branch/tag/hash. """
   svn_rev = "None"
diff --git a/tools/make_distrib.py b/tools/make_distrib.py
index ab7e2233c..725428d32 100644
--- a/tools/make_distrib.py
+++ b/tools/make_distrib.py
@@ -17,7 +17,7 @@ import zipfile
 
 def create_archive(input_dir, zip_file):
   """ Creates a zip archive of the specified input directory. """
-  zf = zipfile.ZipFile(zip_file, 'w', zipfile.ZIP_DEFLATED)
+  zf = zipfile.ZipFile(zip_file, 'w', zipfile.ZIP_DEFLATED, True)
   def addDir(dir):
     for f in os.listdir(dir):
       full_path = os.path.join(dir, f)
@@ -387,7 +387,7 @@ if svn.is_checkout(src_dir):
   chromium_rev = chromium_info['revision']
 elif git.is_checkout(src_dir):
   chromium_url = git.get_url(src_dir)
-  chromium_rev = git.get_hash(src_dir, 'HEAD')
+  chromium_rev = git.get_hash(src_dir)
 else:
   raise Exception('Not a valid checkout: %s' % (src_dir))