diff --git a/include/mbedtls/x509_crt.h b/include/mbedtls/x509_crt.h
index dc3260b..09ba69f 100644
--- a/include/mbedtls/x509_crt.h
+++ b/include/mbedtls/x509_crt.h
@@ -70,6 +70,7 @@
     mbedtls_x509_time valid_from;       /**< Start time of certificate validity. */
     mbedtls_x509_time valid_to;         /**< End time of certificate validity. */
 
+    mbedtls_x509_buf pk_raw;
     mbedtls_pk_context pk;              /**< Container for the public key context. */
 
     mbedtls_x509_buf issuer_id;         /**< Optional X.509 v2/v3 issuer unique identifier. */