diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 9866879..78ec3bd 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -2981,6 +2981,7 @@
 #define MBEDTLS_SSL_SESSION_TICKETS_TLS1_3_MASK \
     (1 << MBEDTLS_SSL_SESSION_TICKETS_TLS1_3_BIT)
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
 static inline int mbedtls_ssl_conf_get_session_tickets(
     const mbedtls_ssl_config *conf)
 {
@@ -2988,6 +2989,7 @@
            MBEDTLS_SSL_SESSION_TICKETS_ENABLED :
            MBEDTLS_SSL_SESSION_TICKETS_DISABLED;
 }
+#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 static inline int mbedtls_ssl_conf_is_signal_new_session_tickets_enabled(