diff --git a/include/mbedtls/ssl_cookie.h b/include/mbedtls/ssl_cookie.h
index 34452aa..b39c09a 100644
--- a/include/mbedtls/ssl_cookie.h
+++ b/include/mbedtls/ssl_cookie.h
@@ -53,6 +53,10 @@
  */
 typedef struct mbedtls_ssl_cookie_ctx
 {
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    mbedtls_svc_key_id_t    MBEDTLS_PRIVATE(psa_hmac);   /*!< key id for the HMAC portion   */
+    psa_algorithm_t         MBEDTLS_PRIVATE(psa_hmac_alg);  /*!< key algorithm for the HMAC portion   */
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
     mbedtls_md_context_t    MBEDTLS_PRIVATE(hmac_ctx);   /*!< context for the HMAC portion   */
 #if !defined(MBEDTLS_HAVE_TIME)
     unsigned long   MBEDTLS_PRIVATE(serial);     /*!< serial number for expiration   */