diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst
index d0429d4..f028c75 100644
--- a/docs/primitives/symmetric-encryption.rst
+++ b/docs/primitives/symmetric-encryption.rst
@@ -72,11 +72,15 @@
 Insecure Modes
 --------------
 
-.. warning:: Do not use. This is an insecure mode.
+.. warning::
+
+    These modes are insecure. New applications should never make use of them,
+    and existing applications should strongly consider migrating away.
+
+
 .. class:: cryptography.primitives.block.modes.ECB()
 
     ECB (Electronic Code Book) is the simplest mode of operation for block
-    ciphers. The data is separated into blocks and each block is encrypted
-    separately. This means identical plaintext blocks will always result in
-    identical encrypted blocks. Due to this property it is not recommended
-    for use. Really, don't use it. Just. Don't.
+    ciphers. Each block of data is encrypted in the same way. This means
+    identical plaintext blocks will always result in identical ciphertext
+    blocks, and thus result in information leakage