diff --git a/library/ssl_tls13_keys.h b/library/ssl_tls13_keys.h
index 1e6fff5..e96cfc1 100644
--- a/library/ssl_tls13_keys.h
+++ b/library/ssl_tls13_keys.h
@@ -19,7 +19,6 @@
 #if !defined(MBEDTLS_SSL_TLS1_3_KEYS_H)
 #define MBEDTLS_SSL_TLS1_3_KEYS_H
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
 /* This requires MBEDTLS_SSL_TLS1_3_LABEL( idx, name, string ) to be defined at
  * the point of use. See e.g. the definition of mbedtls_ssl_tls1_3_labels_union
  * below. */
@@ -345,7 +344,7 @@
           mbedtls_md_type_t md_type,
           unsigned char const *master_secret,
           unsigned char const *transcript, size_t transcript_len,
-          mbedtls_ssl_tls13_application_secrets *derived );
+          mbedtls_ssl_tls1_3_application_secrets *derived );
 
 /**
  * \brief Derive TLS 1.3 resumption master secret from the master secret.
@@ -375,7 +374,7 @@
           mbedtls_md_type_t md_type,
           unsigned char const *application_secret,
           unsigned char const *transcript, size_t transcript_len,
-          mbedtls_ssl_tls13_application_secrets *derived );
+          mbedtls_ssl_tls1_3_application_secrets *derived );
 
 /**
  * \brief Compute the next secret in the TLS 1.3 key schedule
@@ -632,5 +631,4 @@
                                       size_t *actual_len,
                                       int from );
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
 #endif /* MBEDTLS_SSL_TLS1_3_KEYS_H */