diff --git a/include/mbedtls/aes.h b/include/mbedtls/aes.h
index 4a546ac..1829f72 100644
--- a/include/mbedtls/aes.h
+++ b/include/mbedtls/aes.h
@@ -287,7 +287,8 @@
 #define MBEDTLS_DEPRECATED
 #endif
 /**
- * \brief           Old AES block encryption function without return value.
+ * \brief           Deprecated internal AES block encryption function
+ *                  without return value.
  *
  * \deprecated      Superseded by mbedtls_aes_encrypt_ext() in 2.5.0
  *
@@ -300,7 +301,8 @@
                                              unsigned char output[16] );
 
 /**
- * \brief           Old AES block decryption function without return value.
+ * \brief           Deprecated internal AES block decryption function
+ *                  without return value.
  *
  * \deprecated      Superseded by mbedtls_aes_decrypt_ext() in 2.5.0
  *
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 2a2209a..b10d873 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -277,7 +277,7 @@
  *       currently named mbedtls_aes_internal_encrypt and mbedtls_aes_internal_decrypt,
  *       respectively. When setting up alternative implementations, these functions should
  *       be overriden, but the wrapper functions mbedtls_aes_decrypt and mbedtls_aes_encrypt
- *       have to stay untouched.
+ *       must stay untouched.
  *
  * \note If you use the AES_xxx_ALT macros, then is is recommended to also set
  *       MBEDTLS_AES_ROM_TABLES in order to help the linker garbage-collect the AES