diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index e76f4f8..7cd0d1c 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -331,6 +331,9 @@
         ssl_ecrs_cke_ecdh_calc_secret,  /*!< ClientKeyExchange: ECDH step 2 */
         ssl_ecrs_crt_vrfy_sign,         /*!< CertificateVerify: pk_sign()   */
     } ecrs_state;                       /*!< current (or last) operation    */
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+    mbedtls_x509_crt *ecrs_peer_cert;        /*!< The peer's CRT chain.     */
+#endif /* MBEDTLS_X509_CRT_PARSE_C */
     size_t ecrs_n;                      /*!< place for saving a length      */
 #endif
 #if defined(MBEDTLS_SSL_PROTO_DTLS)