diff --git a/gcloud/storage/blob.py b/gcloud/storage/blob.py
index 2947cef50761..c8ced994f856 100644
--- a/gcloud/storage/blob.py
+++ b/gcloud/storage/blob.py
@@ -150,9 +150,9 @@ def public_url(self):
             quoted_name=quote(self.name, safe=''))
 
     def generate_signed_url(self, expiration, method='GET',
-                            client=None, credentials=None,
-                            response_type=None, response_disposition=None,
-                            generation=None):
+                            content_type=None,
+                            generation=None, response_disposition=None,
+                            response_type=None, client=None, credentials=None):
         """Generates a signed URL for this blob.
 
         .. note::
@@ -179,20 +179,13 @@ def generate_signed_url(self, expiration, method='GET',
         :type method: str
         :param method: The HTTP verb that will be used when requesting the URL.
 
-        :type client: :class:`gcloud.storage.client.Client` or ``NoneType``
-        :param client: (Optional) The client to use.  If not passed, falls back
-                       to the ``client`` stored on the blob's bucket.
-
-        :type credentials: :class:`oauth2client.client.OAuth2Credentials` or
-                           :class:`NoneType`
-        :param credentials: (Optional) The OAuth2 credentials to use to sign
-                            the URL. Defaults to the credentials stored on the
-                            client used.
+        :type content_type: str
+        :param content_type: (Optional) The content type of the object
+                             referenced by ``resource``.
 
-        :type response_type: str
-        :param response_type: (Optional) Content type of responses to requests
-                              for the signed URL. Used to over-ride the content
-                              type of the underlying blob/object.
+        :type generation: str
+        :param generation: (Optional) A value that indicates which generation
+                           of the resource to fetch.
 
         :type response_disposition: str
         :param response_disposition: (Optional) Content disposition of
@@ -202,9 +195,21 @@ def generate_signed_url(self, expiration, method='GET',
                                      the value
                                      ``'attachment; filename=blob.png'``.
 
-        :type generation: str
-        :param generation: (Optional) A value that indicates which generation
-                           of the resource to fetch.
+        :type response_type: str
+        :param response_type: (Optional) Content type of responses to requests
+                              for the signed URL. Used to over-ride the content
+                              type of the underlying blob/object.
+
+        :type client: :class:`gcloud.storage.client.Client` or ``NoneType``
+        :param client: (Optional) The client to use.  If not passed, falls back
+                       to the ``client`` stored on the blob's bucket.
+
+
+        :type credentials: :class:`oauth2client.client.OAuth2Credentials` or
+                           :class:`NoneType`
+        :param credentials: (Optional) The OAuth2 credentials to use to sign
+                            the URL. Defaults to the credentials stored on the
+                            client used.
 
         :rtype: str
         :returns: A signed URL you can use to access the resource
@@ -222,6 +227,7 @@ def generate_signed_url(self, expiration, method='GET',
             credentials, resource=resource,
             api_access_endpoint=_API_ACCESS_ENDPOINT,
             expiration=expiration, method=method,
+            content_type=content_type,
             response_type=response_type,
             response_disposition=response_disposition,
             generation=generation)
diff --git a/gcloud/storage/test_blob.py b/gcloud/storage/test_blob.py
index 2b958e6d4308..868498555587 100644
--- a/gcloud/storage/test_blob.py
+++ b/gcloud/storage/test_blob.py
@@ -146,6 +146,7 @@ def _basic_generate_signed_url_helper(self, credentials=None):
             'expiration': EXPIRATION,
             'method': 'GET',
             'resource': PATH,
+            'content_type': None,
             'response_type': None,
             'response_disposition': None,
             'generation': None,
@@ -155,6 +156,40 @@ def _basic_generate_signed_url_helper(self, credentials=None):
     def test_generate_signed_url_w_default_method(self):
         self._basic_generate_signed_url_helper()
 
+    def test_generate_signed_url_w_content_type(self):
+        from gcloud._testing import _Monkey
+        from gcloud.storage import blob as MUT
+
+        BLOB_NAME = 'blob-name'
+        EXPIRATION = '2014-10-16T20:34:37.000Z'
+        connection = _Connection()
+        client = _Client(connection)
+        bucket = _Bucket(client)
+        blob = self._makeOne(BLOB_NAME, bucket=bucket)
+        URI = ('http://example.com/abucket/a-blob-name?Signature=DEADBEEF'
+               '&Expiration=2014-10-16T20:34:37.000Z')
+
+        SIGNER = _Signer()
+        CONTENT_TYPE = "text/html"
+        with _Monkey(MUT, generate_signed_url=SIGNER):
+            signed_url = blob.generate_signed_url(EXPIRATION,
+                                                  content_type=CONTENT_TYPE)
+            self.assertEqual(signed_url, URI)
+
+        PATH = '/name/%s' % (BLOB_NAME,)
+        EXPECTED_ARGS = (_Connection.credentials,)
+        EXPECTED_KWARGS = {
+            'api_access_endpoint': 'https://storage.googleapis.com',
+            'expiration': EXPIRATION,
+            'method': 'GET',
+            'resource': PATH,
+            'content_type': CONTENT_TYPE,
+            'response_type': None,
+            'response_disposition': None,
+            'generation': None,
+        }
+        self.assertEqual(SIGNER._signed, [(EXPECTED_ARGS, EXPECTED_KWARGS)])
+
     def test_generate_signed_url_w_credentials(self):
         credentials = object()
         self._basic_generate_signed_url_helper(credentials=credentials)
@@ -183,6 +218,7 @@ def test_generate_signed_url_w_slash_in_name(self):
             'expiration': EXPIRATION,
             'method': 'GET',
             'resource': '/name/parent%2Fchild',
+            'content_type': None,
             'response_type': None,
             'response_disposition': None,
             'generation': None,
@@ -214,6 +250,7 @@ def test_generate_signed_url_w_method_arg(self):
             'expiration': EXPIRATION,
             'method': 'POST',
             'resource': PATH,
+            'content_type': None,
             'response_type': None,
             'response_disposition': None,
             'generation': None,