diff --git a/README.md b/README.md
index ec1c586..11c1c53 100644
--- a/README.md
+++ b/README.md
@@ -81,7 +81,7 @@ Following dependencies are audited:
 
 ### 0.2.0
 
-- Revamp documentations
+- Revamp documentation
 - Optional pure Rust AES backend
 - WASM compatibility
 
diff --git a/src/consts.rs b/src/consts.rs
index 40c14af..61980d2 100644
--- a/src/consts.rs
+++ b/src/consts.rs
@@ -1,4 +1,8 @@
+/// AES IV/nonce length
 pub const AES_IV_LENGTH: usize = 16;
+/// AES tag length
 pub const AES_TAG_LENGTH: usize = 16;
+/// AES IV + tag length
 pub const AES_IV_PLUS_TAG_LENGTH: usize = AES_IV_LENGTH + AES_TAG_LENGTH;
+/// Empty bytes array
 pub const EMPTY_BYTES: [u8; 0] = [];