diff --git a/client/fetcher.py b/client/fetcher.py
index c239845..a63e3a4 100755
--- a/client/fetcher.py
+++ b/client/fetcher.py
@@ -30,11 +30,6 @@ parser.add_argument(
     dest='image_dir',
     action='store',
     required=True)
-parser.add_argument(
-    '--image-type',
-    dest='image_type',
-    action='store',
-    required=True)
 FLAGS = parser.parse_args()
 
 
@@ -55,9 +50,8 @@ class Fetcher(object):
   _BUF_SIZE = 2 ** 16
   _MAX_BP = 10000
 
-  def __init__(self, base_url, image_type, ca_cert, image_dir):
+  def __init__(self, base_url, ca_cert, image_dir):
     self._base_url = base_url
-    self._image_type = image_type
     self._ca_cert_path = ca_cert
     self._image_dir = image_dir
 
@@ -98,7 +92,7 @@ class Fetcher(object):
     return json.loads(wrapped['inner'])
 
   def _GetManifest(self):
-    url = '%s/%s.manifest.json' % (self._base_url, self._image_type)
+    url = '%s/manifest.json' % (self._base_url)
     resp = urllib.request.urlopen(url).read().decode('utf8')
     return self._Unwrap(json.loads(resp))
 
@@ -114,7 +108,7 @@ class Fetcher(object):
     raise NoValidImage
 
   def _FetchImage(self, image):
-    filename = '%s.%d.iso' % (self._image_type, image['timestamp'])
+    filename = '%d.iso' % (image['timestamp'])
     path = os.path.join(self._image_dir, filename)
 
     if os.path.exists(path):
@@ -141,7 +135,7 @@ class Fetcher(object):
       raise
 
   def _SetCurrent(self, image):
-    filename = '%s.%d.iso' % (self._image_type, image['timestamp'])
+    filename = '%d.iso' % (image['timestamp'])
     path = os.path.join(self._image_dir, filename)
     current_path = os.path.join(self._image_dir, 'current')
 
@@ -166,7 +160,7 @@ class Fetcher(object):
 
 
 def main():
-  fetcher = Fetcher(FLAGS.base_url, FLAGS.image_type, FLAGS.ca_cert, FLAGS.image_dir)
+  fetcher = Fetcher(FLAGS.base_url, FLAGS.ca_cert, FLAGS.image_dir)
   fetcher.Fetch()
 
 
diff --git a/server/build_manifest.py b/server/build_manifest.py
index b9f8065..ce18c58 100755
--- a/server/build_manifest.py
+++ b/server/build_manifest.py
@@ -21,11 +21,6 @@ parser.add_argument(
     dest='image_dir',
     action='store',
     required=True)
-parser.add_argument(
-    '--image-type',
-    dest='image_type',
-    action='store',
-    required=True)
 parser.add_argument(
     '--old-manifest',
     dest='old_manifest',
@@ -35,14 +30,11 @@ FLAGS = parser.parse_args()
 
 class ManifestBuilder(object):
 
-  _FILE_REGEX = '^%(image_type)s\.(?P<timestamp>\d+)\.iso$'
+  _FILE_REGEX = re.compile('^(?P<timestamp>\d+)\.iso$')
   _BUF_SIZE = 2 ** 16
 
-  def __init__(self, image_dir, image_type, old_manifest):
+  def __init__(self, image_dir, old_manifest):
     self._image_dir = image_dir
-    self._file_regex = re.compile(self._FILE_REGEX % {
-        'image_type': image_type,
-    })
     self._old_manifest = old_manifest
 
   def _Rollouts(self):
@@ -64,7 +56,7 @@ class ManifestBuilder(object):
     }
     rollouts = self._Rollouts()
     for filename in os.listdir(self._image_dir):
-      match = self._file_regex.match(filename)
+      match = self._FILE_REGEX.match(filename)
       if not match:
         continue
       timestamp = int(match.group('timestamp'))
@@ -86,7 +78,7 @@ class ManifestBuilder(object):
 
 
 def main():
-  builder = ManifestBuilder(FLAGS.image_dir, FLAGS.image_type, FLAGS.old_manifest)
+  builder = ManifestBuilder(FLAGS.image_dir, FLAGS.old_manifest)
   manifest = builder.BuildManifest()
   json.dump(manifest, sys.stdout, sort_keys=True, indent=4)
   sys.stdout.write('\n')
diff --git a/server/image.py b/server/image.py
index 5612ffc..b27ec7e 100755
--- a/server/image.py
+++ b/server/image.py
@@ -25,11 +25,6 @@ parser.add_argument(
     dest='device',
     action='store',
     required=True)
-parser.add_argument(
-    '--image-type',
-    dest='image_type',
-    action='store',
-    required=True)
 parser.add_argument(
     '--persistent-percent',
     dest='persistent_percent',
@@ -41,12 +36,11 @@ FLAGS = parser.parse_args()
 
 class Imager(object):
 
-  def __init__(self, device, persistent_percent, base_url, ca_cert, image_type):
+  def __init__(self, device, persistent_percent, base_url, ca_cert):
     self._device = device
     self._persistent_percent = persistent_percent
     self._base_url = base_url
     self._ca_cert = ca_cert
-    self._image_type = image_type
 
     self._icon_server_path = os.path.dirname(sys.argv[0])
 
@@ -130,8 +124,7 @@ class Imager(object):
         fetcher,
         '--image-dir', image_path,
         '--base-url', self._base_url,
-        '--ca-cert', self._ca_cert,
-        '--image-type', self._image_type)
+        '--ca-cert', self._ca_cert)
 
     return image_path
 
@@ -167,7 +160,7 @@ class Imager(object):
 
 
 def main():
-  imager = Imager(FLAGS.device, FLAGS.persistent_percent, FLAGS.base_url, FLAGS.ca_cert, FLAGS.image_type)
+  imager = Imager(FLAGS.device, FLAGS.persistent_percent, FLAGS.base_url, FLAGS.ca_cert)
   imager.Image()