diff --git a/include/mbedtls/x509.h b/include/mbedtls/x509.h
index e6781b6..13067b8 100644
--- a/include/mbedtls/x509.h
+++ b/include/mbedtls/x509.h
@@ -305,6 +305,8 @@
                      mbedtls_x509_buf *serial );
 int mbedtls_x509_name_cmp( const mbedtls_x509_name *a,
                            const mbedtls_x509_name *b );
+int mbedtls_x509_name_cmp_raw( const mbedtls_x509_buf_raw *a,
+                               const mbedtls_x509_buf_raw *b );
 int mbedtls_x509_memcasecmp( const void *s1, const void *s2, size_t len );
 int mbedtls_x509_get_ext( unsigned char **p, const unsigned char *end,
                   mbedtls_x509_buf *ext, int tag );