diff --git a/cryptography/hazmat/backends/openssl/backend.py b/cryptography/hazmat/backends/openssl/backend.py
index d080cc8..0c4fbc3 100644
--- a/cryptography/hazmat/backends/openssl/backend.py
+++ b/cryptography/hazmat/backends/openssl/backend.py
@@ -706,7 +706,7 @@
         self._signature = signature
         if not isinstance(padding, interfaces.AsymmetricPadding):
             raise TypeError(
-                "Expected interface of interfaces.AsymmetricPadding")
+                "Expected provider of interfaces.AsymmetricPadding")
 
         if padding.name == "EMSA-PKCS1-v1_5":
             if self._backend._lib.Cryptography_HAS_PKEY_CTX:
@@ -723,13 +723,13 @@
 
     def update(self, data):
         if self._hash_ctx is None:
-            raise AlreadyFinalized("Context was already finalized")
+            raise AlreadyFinalized("Context has already been finalized")
 
         self._hash_ctx.update(data)
 
     def verify(self):
         if self._hash_ctx is None:
-            raise AlreadyFinalized("Context was already finalized")
+            raise AlreadyFinalized("Context has already been finalized")
 
         evp_pkey = self._backend._lib.EVP_PKEY_new()
         assert evp_pkey != self._backend._ffi.NULL
diff --git a/docs/hazmat/primitives/asymmetric/rsa.rst b/docs/hazmat/primitives/asymmetric/rsa.rst
index 198ed7a..b311944 100644
--- a/docs/hazmat/primitives/asymmetric/rsa.rst
+++ b/docs/hazmat/primitives/asymmetric/rsa.rst
@@ -115,6 +115,28 @@
 
         .. versionadded:: 0.3
 
+        Verify data was signed by the private key associated with the public
+        key.
+
+        .. doctest::
+
+            >>> from cryptography.hazmat.backends import default_backend
+            >>> from cryptography.hazmat.primitives import hashes
+            >>> from cryptography.hazmat.primitives.asymmetric import rsa, padding
+            >>> private_key = rsa.RSAPrivateKey.generate(
+            ...     public_exponent=65537,
+            ...     key_size=2048,
+            ...     backend=default_backend()
+            ... )
+            >>> signer = private_key.signer(padding.PKCS1v15(), hashes.SHA256(), default_backend())
+            >>> data= b"this is some data I'd like to sign"
+            >>> signer.update(data)
+            >>> signature = signer.finalize()
+            >>> public_key = private_key.public_key()
+            >>> verifier = public_key.verifier(signature, padding.PKCS1v15(), hashes.SHA256(), default_backend())
+            >>> verifier.update(data)
+            >>> verifier.verify()
+
         :param bytes signature: The signature to verify.
 
         :param padding: An instance of a
@@ -132,25 +154,6 @@
         :returns:
             :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricVerificationContext`
 
-        .. doctest::
-
-            >>> from cryptography.hazmat.backends import default_backend
-            >>> from cryptography.hazmat.primitives import hashes
-            >>> from cryptography.hazmat.primitives.asymmetric import rsa, padding
-            >>> private_key = rsa.RSAPrivateKey.generate(
-            ...     public_exponent=65537,
-            ...     key_size=2048,
-            ...     backend=default_backend()
-            ... )
-            >>> signer = private_key.signer(padding.PKCS1(), hashes.SHA256(), default_backend())
-            >>> data= b"this is some data I'd like to sign"
-            >>> signer.update(data)
-            >>> signature = signer.finalize()
-            >>> public_key = private_key.public_key()
-            >>> verifier = public_key.verifier(signature, padding.PKCS1(), hashes.SHA256(), default_backend())
-            >>> verifier.update(data)
-            >>> verifier.verify()
-
 .. _`RSA`: https://en.wikipedia.org/wiki/RSA_(cryptosystem)
 .. _`public-key`: https://en.wikipedia.org/wiki/Public-key_cryptography
 .. _`use 65537`: http://www.daemonology.net/blog/2009-06-11-cryptographic-right-answers.html