diff --git a/contrib/rackspace/rackspace/clients.py b/contrib/rackspace/rackspace/clients.py
index 28c693e06a..e4362cc542 100644
--- a/contrib/rackspace/rackspace/clients.py
+++ b/contrib/rackspace/rackspace/clients.py
@@ -40,7 +40,6 @@ except ImportError:
 
 cloud_opts = [
     cfg.StrOpt('region_name',
-               default=None,
                help=_('Region for connecting to services.'))
 ]
 cfg.CONF.register_opts(cloud_opts)
diff --git a/heat/api/aws/ec2token.py b/heat/api/aws/ec2token.py
index 030f4c131f..e85d4ca2e1 100644
--- a/heat/api/aws/ec2token.py
+++ b/heat/api/aws/ec2token.py
@@ -33,7 +33,6 @@ logger = logging.getLogger(__name__)
 
 opts = [
     cfg.StrOpt('auth_uri',
-               default=None,
                help=_("Authentication Endpoint URI.")),
     cfg.BoolOpt('multi_cloud',
                 default=False,
diff --git a/heat/common/config.py b/heat/common/config.py
index 3ef5a4e437..617864452a 100644
--- a/heat/common/config.py
+++ b/heat/common/config.py
@@ -56,7 +56,6 @@ service_opts = [
                help='Instance connection to CFN/CW API validate certs if SSL '
                     'is used.'),
     cfg.StrOpt('region_name_for_services',
-               default=None,
                help='Default region name used to get services endpoints.'),
     cfg.StrOpt('heat_stack_user_role',
                default="heat_stack_user",
diff --git a/heat/common/wsgi.py b/heat/common/wsgi.py
index a29784ea45..6f1cbe5eb7 100644
--- a/heat/common/wsgi.py
+++ b/heat/common/wsgi.py
@@ -62,11 +62,11 @@ api_opts = [
                help=_("Number of backlog requests "
                       "to configure the socket with."),
                deprecated_group='DEFAULT'),
-    cfg.StrOpt('cert_file', default=None,
+    cfg.StrOpt('cert_file',
                help=_("Location of the SSL certificate file "
                       "to use for SSL mode."),
                deprecated_group='DEFAULT'),
-    cfg.StrOpt('key_file', default=None,
+    cfg.StrOpt('key_file',
                help=_("Location of the SSL key file to use "
                       "for enabling SSL mode."),
                deprecated_group='DEFAULT'),
@@ -96,11 +96,11 @@ api_cfn_opts = [
                help=_("Number of backlog requests "
                       "to configure the socket with."),
                deprecated_group='DEFAULT'),
-    cfg.StrOpt('cert_file', default=None,
+    cfg.StrOpt('cert_file',
                help=_("Location of the SSL certificate file "
                       "to use for SSL mode."),
                deprecated_group='DEFAULT'),
-    cfg.StrOpt('key_file', default=None,
+    cfg.StrOpt('key_file',
                help=_("Location of the SSL key file to use "
                       "for enabling SSL mode."),
                deprecated_group='DEFAULT'),
@@ -130,11 +130,11 @@ api_cw_opts = [
                help=_("Number of backlog requests "
                       "to configure the socket with."),
                deprecated_group='DEFAULT'),
-    cfg.StrOpt('cert_file', default=None,
+    cfg.StrOpt('cert_file',
                help=_("Location of the SSL certificate file "
                       "to use for SSL mode."),
                deprecated_group='DEFAULT'),
-    cfg.StrOpt('key_file', default=None,
+    cfg.StrOpt('key_file',
                help=_("Location of the SSL key file to use "
                       "for enabling SSL mode."),
                deprecated_group='DEFAULT'),
diff --git a/heat/engine/resources/loadbalancer.py b/heat/engine/resources/loadbalancer.py
index d102089ff6..c789149d8b 100644
--- a/heat/engine/resources/loadbalancer.py
+++ b/heat/engine/resources/loadbalancer.py
@@ -197,7 +197,6 @@ lb_template_default = r'''
 # Allow user to provide alternative nested stack template to the above
 loadbalancer_opts = [
     cfg.StrOpt('loadbalancer_template',
-               default=None,
                help='Custom template for the built-in '
                     'loadbalancer nested stack.')]
 cfg.CONF.register_opts(loadbalancer_opts)