diff --git a/components/esp_http_client/esp_http_client.c b/components/esp_http_client/esp_http_client.c
index 1b120532c5..0ef7b022b3 100644
--- a/components/esp_http_client/esp_http_client.c
+++ b/components/esp_http_client/esp_http_client.c
@@ -1141,7 +1141,7 @@ static int esp_http_client_get_data(esp_http_client_handle_t client)
     esp_http_buffer_t *res_buffer = client->response->buffer;
 
     ESP_LOGD(TAG, "data_process=%"PRId64", content_length=%"PRId64, client->response->data_process, client->response->content_length);
-
+    errno = 0;
     int rlen = esp_transport_read(client->transport, res_buffer->data, client->buffer_size_rx, client->timeout_ms);
     if (rlen >= 0) {
         // When tls error is ESP_TLS_ERR_SSL_WANT_READ (-0x6900), esp_trasnport_read returns ERR_TCP_TRANSPORT_CONNECTION_TIMEOUT (0x0).
@@ -1380,6 +1380,7 @@ int64_t esp_http_client_fetch_headers(esp_http_client_handle_t client)
     client->response->status_code = -1;
 
     while (client->state < HTTP_STATE_RES_COMPLETE_HEADER) {
+        errno = 0;
         buffer->len = esp_transport_read(client->transport, buffer->data, client->buffer_size_rx, client->timeout_ms);
         if (buffer->len <= 0) {
             if (buffer->len == ERR_TCP_TRANSPORT_CONNECTION_TIMEOUT) {