diff --git a/Notes-on-encryption.md b/Notes-on-encryption.md
index b047c43..e040f2b 100644
--- a/Notes-on-encryption.md
+++ b/Notes-on-encryption.md
@@ -1,4 +1,4 @@
-### udp2raw supports the following encryption related feature
+### udp2raw supports the following encryption related features
 * Encrypt your traffic with AES-128-CBC.
 * Protect data integrity by HMAC-SHA1 (or weaker MD5/CRC32).
 * Defense replay attack with anti-replay window