diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index fb7533a08b..333b1c1768 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -941,6 +941,12 @@ struct mbedtls_ssl_transform
     mbedtls_cipher_context_t cipher_ctx_dec;    /*!<  decryption context      */
     int minor_ver;
 
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    mbedtls_svc_key_id_t psa_key_enc;           /*!<  psa encryption key      */
+    mbedtls_svc_key_id_t psa_key_dec;           /*!<  psa decryption key      */
+    psa_algorithm_t psa_alg;                    /*!<  psa algorithm           */
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
+
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
     uint8_t in_cid_len;
     uint8_t out_cid_len;