New language
diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst
index 5d2177d..39a5a63 100644
--- a/docs/primitives/symmetric-encryption.rst
+++ b/docs/primitives/symmetric-encryption.rst
@@ -53,6 +53,6 @@
to be kept secret (they can be included
in a transmitted message). Must be the
same number of bytes as the
- ``block_size`` of the cipher.
- Initialization vectors should not be
- reused with the same ``key``.
+ ``block_size`` of the cipher. Do not
+ reuse an ``initialization_vector`` with
+ a given ``key``.