diff --git a/components/esp-tls/esp_tls_mbedtls.c b/components/esp-tls/esp_tls_mbedtls.c
index 79921f0c36d..ce1d832b093 100644
--- a/components/esp-tls/esp_tls_mbedtls.c
+++ b/components/esp-tls/esp_tls_mbedtls.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2019-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -947,8 +947,9 @@ static esp_err_t esp_set_atecc608a_pki_context(esp_tls_t *tls, const void *pki)
     }
     mbedtls_x509_crt_init(&tls->clientcert);
 
-    if(cfg->clientcert_buf != NULL) {
-        ret = mbedtls_x509_crt_parse(&tls->clientcert, (const unsigned char*)((esp_tls_pki_t *)pki->publiccert_pem_buf), (esp_tls_pki_t *)pki->publiccert_pem_bytes);
+    esp_tls_pki_t *pki_l = (esp_tls_pki_t *) pki;
+    if (pki_l->publiccert_pem_buf != NULL) {
+        ret = mbedtls_x509_crt_parse(&tls->clientcert, pki_l->publiccert_pem_buf, pki_l->publiccert_pem_bytes);
         if (ret < 0) {
             ESP_LOGE(TAG, "mbedtls_x509_crt_parse of client cert returned -0x%04X", -ret);
             mbedtls_print_error_msg(ret);