diff --git a/library/ecdh_misc.h b/library/ecdh_misc.h
index 228f54a..d0f338a 100644
--- a/library/ecdh_misc.h
+++ b/library/ecdh_misc.h
@@ -36,19 +36,19 @@
                                    mbedtls_ecp_group_id grp_id );
 
 /*
- * TLS 1.3 version of mbedtls_ecdh_make_params in ecdh.h
+ * TLS 1.3 version of mbedtls_ecdh_make_params
  */
 int mbedtls_ecdh_tls13_make_params( mbedtls_ecdh_context *ctx, size_t *olen,
-                                    unsigned char *buf, size_t blen,
+                                    unsigned char *buf, size_t buf_len,
                                     int ( *f_rng )( void *, unsigned char *, size_t ),
                                     void *p_rng );
 
 /*
- * TLS 1.3 version of mbedtls_ecdh_read_public in ecdh.h
+ * TLS 1.3 version of mbedtls_ecdh_read_public
  */
 int mbedtls_ecdh_tls13_read_public( mbedtls_ecdh_context *ctx,
                                     const unsigned char *buf,
-                                    size_t blen );
+                                    size_t buf_len );
 
 #endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */