diff --git a/include/mbedtls/blowfish.h b/include/mbedtls/blowfish.h
index 0f192aa..6062cd0 100644
--- a/include/mbedtls/blowfish.h
+++ b/include/mbedtls/blowfish.h
@@ -95,7 +95,7 @@
  * \param key      encryption key
  * \param keybits  must be between 32 and 448 bits
  *
- * \return         0 if successful, or MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH
+ * \return         0 if successful, or MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA
  */
 int mbedtls_blowfish_setkey( mbedtls_blowfish_context *ctx, const unsigned char *key,
                      unsigned int keybits );
@@ -137,7 +137,7 @@
  * \param output   buffer holding the output data
  *
  * \return         0 if successful, or
- *                 MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH
+ *                 MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA
  */
 int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx,
                         int mode,