diff --git a/docs/hazmat/backends/interfaces.rst b/docs/hazmat/backends/interfaces.rst
index 3b3d5ef..6833f22 100644
--- a/docs/hazmat/backends/interfaces.rst
+++ b/docs/hazmat/backends/interfaces.rst
@@ -351,7 +351,8 @@
             :class:`~cryptography.hazmat.primitives.interfaces.DSAPublicKey`
             provider.
 
-        :param bytes signature: The signature to verify.
+        :param bytes signature: The signature to verify. DER encoded as
+            specified in :rfc:`6979`.
 
         :param algorithm: An instance of a
             :class:`~cryptography.hazmat.primitives.interfaces.HashAlgorithm`
@@ -369,14 +370,16 @@
         :returns: ``True`` if the specified ``algorithm`` is supported by this
             backend, otherwise ``False``.
 
-    .. method:: dsa_parameters_supported(p, q):
+    .. method:: dsa_parameters_supported(p, q, g):
 
         :param int p: The p value of a DSA key.
 
         :param int q: The q value of a DSA key.
 
-        :returns: ``True`` if the given values of ``p`` and ``q`` are supported
-            by this backend, otherwise ``False``.
+        :param int g: The g value of a DSA key.
+
+        :returns: ``True`` if the given values of ``p``, ``q``, and ``g`` are
+            supported by this backend, otherwise ``False``.
 
 
 .. class:: CMACBackend
diff --git a/docs/hazmat/primitives/asymmetric/dsa.rst b/docs/hazmat/primitives/asymmetric/dsa.rst
index 5cee570..03e476b 100644
--- a/docs/hazmat/primitives/asymmetric/dsa.rst
+++ b/docs/hazmat/primitives/asymmetric/dsa.rst
@@ -142,7 +142,7 @@
             ...     hashes.SHA256(),
             ...     default_backend()
             ... )
-            >>> data= b"this is some data I'd like to sign"
+            >>> data = b"this is some data I'd like to sign"
             >>> signer.update(data)
             >>> signature = signer.finalize()
             >>> public_key = private_key.public_key()
@@ -154,7 +154,7 @@
             >>> verifier.update(data)
             >>> verifier.verify()
 
-        :param bytes signature: The signature to verify in DER encoding as
+        :param bytes signature: The signature to verify. DER encoded as
             specified in :rfc:`6979`.
 
         :param algorithm: An instance of a