diff --git a/openstackclient/shell.py b/openstackclient/shell.py
index e29d6382..14b4f80a 100644
--- a/openstackclient/shell.py
+++ b/openstackclient/shell.py
@@ -99,19 +99,19 @@ class OpenStackShell(App):
         parser.add_argument('--os-identity-api-version',
             metavar='<identity-api-version>',
             default=env('OS_IDENTITY_API_VERSION', default='2.0'),
-            help='Identity API version, default=2.0 '\
+            help='Identity API version, default=2.0 '
                                 '(Env: OS_IDENTITY_API_VERSION)')
 
         parser.add_argument('--os-compute-api-version',
             metavar='<compute-api-version>',
             default=env('OS_COMPUTE_API_VERSION', default='2'),
-            help='Compute API version, default=2 '\
+            help='Compute API version, default=2 '
                                 '(Env: OS_COMPUTE_API_VERSION)')
 
         parser.add_argument('--os-image-api-version',
             metavar='<image-api-version>',
             default=env('OS_IMAGE_API_VERSION', default='1.0'),
-            help='Image API version, default=1.0 '\
+            help='Image API version, default=1.0 '
                                 '(Env: OS_IMAGE_API_VERSION)')
 
         parser.add_argument('--os-token', metavar='<token>',
diff --git a/tox.ini b/tox.ini
index 624754bb..f5625341 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ deps = -r{toxinidir}/tools/pip-requires
 commands = nosetests
 
 [testenv:pep8]
-deps = pep8
+deps = pep8==1.1
 commands = pep8 --repeat --show-source openstackclient setup.py
 
 [testenv:venv]