diff --git a/docs/primitives/cryptographic-hashes.rst b/docs/primitives/cryptographic-hashes.rst
index 397e50d..d4dde04 100644
--- a/docs/primitives/cryptographic-hashes.rst
+++ b/docs/primitives/cryptographic-hashes.rst
@@ -1,5 +1,5 @@
 Message Digests
-====================
+===============
 
 .. class:: cryptography.primitives.hashes.BaseHash
 
@@ -8,7 +8,7 @@
 
     .. method:: update(data)
 
-        :param bytes data The bytes you wish to hash.
+        :param bytes data: The bytes you wish to hash.
 
     .. method:: copy()