diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 6e82631..43a8486 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -810,6 +810,8 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *p = buf;
+    const unsigned char *psk_identity;
+    size_t psk_identity_len;
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info = NULL;
     psa_algorithm_t psa_hash_alg;
     int hash_len = 0;
@@ -819,6 +821,12 @@
     unsigned char transcript[MBEDTLS_MD_MAX_SIZE];
     size_t transcript_len;
 
+    if( mbedtls_ssl_get_psk_to_offer( ssl, &psk_type, &psk, &psk_len,
+                                      &psk_identity, &psk_identity_len ) != 0 )
+    {
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    }
+
     ciphersuite_info = mbedtls_ssl_ciphersuite_from_id(
             ssl->session_negotiate->ciphersuite );
     if( ciphersuite_info  == NULL )