diff --git a/doc/source/users/proxies/identity_v2.rst b/doc/source/users/proxies/identity_v2.rst
index 3f2c65aeb..0cd4b77e2 100644
--- a/doc/source/users/proxies/identity_v2.rst
+++ b/doc/source/users/proxies/identity_v2.rst
@@ -20,7 +20,7 @@ Extension Operations
    .. automethod:: openstack.identity.v2._proxy.Proxy.get_extension
    .. automethod:: openstack.identity.v2._proxy.Proxy.extensions
 
- User Operations
+User Operations
 ^^^^^^^^^^^^^^^
 
 .. autoclass:: openstack.identity.v2._proxy.Proxy
diff --git a/openstack/database/v1/_proxy.py b/openstack/database/v1/_proxy.py
index b06e4fdb5..89a1702cd 100644
--- a/openstack/database/v1/_proxy.py
+++ b/openstack/database/v1/_proxy.py
@@ -80,7 +80,7 @@ class Proxy(proxy2.BaseProxy):
 
         :param instance: This can be either the ID of an instance
                          or a :class:`~openstack.database.v1.instance.Instance`
-                       instance that the interface belongs to.
+                         instance that the interface belongs to.
         :param kwargs \*\*query: Optional query parameters to be sent to limit
                                  the resources being returned.
 
diff --git a/setup.cfg b/setup.cfg
index a11e58a1a..2c6b5a0a4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -28,6 +28,7 @@ packages =
 source-dir = doc/source
 build-dir = doc/build
 all_files = 1
+warning-is-error = 1
 
 [upload_sphinx]
 upload-dir = doc/build/html