diff --git a/include/mbedtls/chacha20.h b/include/mbedtls/chacha20.h
index d7a0750..47bd7d3 100644
--- a/include/mbedtls/chacha20.h
+++ b/include/mbedtls/chacha20.h
@@ -139,7 +139,7 @@
  *                  \c mbedtls_chacha20_starts() must be called at least once
  *                  to setup the context before this function can be called.
  *
- * \note            This function can be called mutliple times in a row in
+ * \note            This function can be called multiple times in a row in
  *                  order to encrypt of decrypt data piecewise with the same
  *                  key and nonce.
  *
diff --git a/include/mbedtls/chachapoly.h b/include/mbedtls/chachapoly.h
index 649749a..42b2b23 100644
--- a/include/mbedtls/chachapoly.h
+++ b/include/mbedtls/chachapoly.h
@@ -175,7 +175,7 @@
  *                  The Additional Authenticated Data (AAD), also called
  *                  Associated Data (AD) is only authenticated but not
  *                  encrypted nor included in the encrypted output. It is
- *                  usually transmitted separately fro mthe ciphertext or
+ *                  usually transmitted separately from the ciphertext or
  *                  computed locally by each party.
  *
  * \note            This function is called before data is encrypted/decrypted.
diff --git a/include/mbedtls/poly1305.h b/include/mbedtls/poly1305.h
index 5c69a81..54b50ab 100644
--- a/include/mbedtls/poly1305.h
+++ b/include/mbedtls/poly1305.h
@@ -1,7 +1,7 @@
 /**
  * \file poly1305.h
  *
- * \brief   This file containts Poly1305 definitions and functions.
+ * \brief   This file contains Poly1305 definitions and functions.
  *
  *          Poly1305 is a one-time message authenticator that can be used to
  *          authenticate messages. Poly1305-AES was created by Daniel
@@ -109,9 +109,9 @@
  * \brief           This functions feeds an input buffer into an ongoing
  *                  Poly1305 computation.
  *
- *                  It is called between \c mbedtls_cipher_cmac_starts() and
- *                  \c mbedtls_cipher_cmac_finish().
- *                  Can be called repeatedly to process a stream of data.
+ *                  It is called between \c mbedtls_cipher_poly1305_starts() and
+ *                  \c mbedtls_cipher_poly1305_finish().
+ *                  It can be called repeatedly to process a stream of data.
  *
  * \param ctx       The Poly1305 context to use for the Poly1305 operation.
  * \param ilen      The length of the input data (in bytes). Any value is accepted.