diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 4933980..834a239 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -3549,7 +3549,7 @@
 }
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
-void mbedtls_ssl_conf_tls13_key_exchange_modes( mbedtls_ssl_config* conf,
+void mbedtls_ssl_conf_tls13_key_exchange_modes( mbedtls_ssl_config *conf,
                                                 const int kex_modes )
 {
     conf->tls13_kex_modes = kex_modes;