diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index 374e1a2..63929d8 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -215,7 +215,7 @@
      */
     if (server_age > MBEDTLS_SSL_TLS1_3_MAX_ALLOWED_TICKET_LIFETIME * 1000) {
         MBEDTLS_SSL_DEBUG_MSG(
-            3, ("Ticket age exceeds limitation ticket_age=%" MBEDTLS_PRINTF_MS_TIME,
+            3, ("Ticket age exceeds limitation ticket_age = %" MBEDTLS_PRINTF_MS_TIME,
                 server_age));
         goto exit;
     }