diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index ecbeb8b..7fd5686 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -289,7 +289,7 @@
 /**
  * \brief          Return the maximum fragment length (payload, in bytes) for
  *                 the input buffer. This is the negotiated maximum fragment
- *                 length, or, if there is none, MBEDTLS_SSL_MAX_CONTENT_LEN.
+ *                 length, or, if there is none, MBEDTLS_SSL_IN_CONTENT_LEN.
  *                 If it is not defined either, the value is 2^14. This function
  *                 works as its predecessor, \c mbedtls_ssl_get_max_frag_len().
  *