.
diff --git a/docs/hazmat/primitives/rsa.rst b/docs/hazmat/primitives/rsa.rst
index d62aa10..7c6356c 100644
--- a/docs/hazmat/primitives/rsa.rst
+++ b/docs/hazmat/primitives/rsa.rst
@@ -51,7 +51,7 @@
 
     :raises ValueError: This is raised when the values of `public_exponent` or
                         `modulus` do not match the bounds specified in
-                        `RFC 3447`_
+                        `RFC 3447`_.
 
 .. _`RSA`: https://en.wikipedia.org/wiki/RSA_(cryptosystem)
 .. _`public-key`: https://en.wikipedia.org/wiki/Public-key_cryptography