diff --git a/include/mbedtls/cipher.h b/include/mbedtls/cipher.h
index 54fd53d..de2ea99 100644
--- a/include/mbedtls/cipher.h
+++ b/include/mbedtls/cipher.h
@@ -720,7 +720,7 @@
  *                3. mbedtls_cipher_update() one or more times
  *                4. mbedtls_cipher_finish()
  *                .
- *                This sequence can be repeated to encrypt of decrypt multiple
+ *                This sequence can be repeated to encrypt or decrypt multiple
  *                messages with the same key.
  *
  * \note          With AEAD ciphers, the order of calls for each message
@@ -733,7 +733,7 @@
  *                6. mbedtls_cipher_check_tag() (for decryption) or
  *                mbedtls_cipher_write_tag() (for encryption).
  *                .
- *                This sequence can be repeated to encrypt of decrypt multiple
+ *                This sequence can be repeated to encrypt or decrypt multiple
  *                messages with the same key.
  *
  * \param ctx     The generic cipher context. This must be bound to a key.