Use backend as keyword argument everywhere.
diff --git a/docs/hazmat/primitives/cryptographic-hashes.rst b/docs/hazmat/primitives/cryptographic-hashes.rst
index f05b45a..92f8fa3 100644
--- a/docs/hazmat/primitives/cryptographic-hashes.rst
+++ b/docs/hazmat/primitives/cryptographic-hashes.rst
@@ -22,7 +22,7 @@
>>> from cryptography.hazmat.bindings import default_backend
>>> from cryptography.hazmat.primitives import hashes
- >>> digest = hashes.Hash(hashes.SHA256(), default_backend())
+ >>> digest = hashes.Hash(hashes.SHA256(), backend=default_backend())
>>> digest.update(b"abc")
>>> digest.update(b"123")
>>> digest.finalize()