diff --git a/components/tcp_transport/transport_ssl.c b/components/tcp_transport/transport_ssl.c
index f2d34672..17a8426e 100644
--- a/components/tcp_transport/transport_ssl.c
+++ b/components/tcp_transport/transport_ssl.c
@@ -129,6 +129,7 @@ static int ssl_read(esp_transport_handle_t t, char *buffer, int len, int timeout
     ret = esp_tls_conn_read(ssl->tls, (unsigned char *)buffer, len);
     if (ret <= 0) {
         ESP_LOGE(TAG, "esp_tls_conn_read error, errno=%s", strerror(errno));
+        return -1;
     }
     return ret;
 }