diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index bd88918..907bba1 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -1381,7 +1381,7 @@
  * \param profile  Profile to use
  */
 void mbedtls_ssl_conf_cert_profile( mbedtls_ssl_config *conf,
-                                    mbedtls_x509_crt_profile *profile );
+                                    const mbedtls_x509_crt_profile *profile );
 
 /**
  * \brief          Set the data required to verify peer certificate