diff --git a/glue-lwip/arduino/lwipopts.h b/glue-lwip/arduino/lwipopts.h
index 12f3f48c1..b15c2ad58 100644
--- a/glue-lwip/arduino/lwipopts.h
+++ b/glue-lwip/arduino/lwipopts.h
@@ -2273,6 +2273,12 @@
  * @ingroup lwip_opts_infrastructure
  * @{
  */
+/**
+ * LWIP_CHKSUM_ALGORITHM==3: Checksum algorithm fastest for ESP8266
+ */
+#if !defined LWIP_CHKSUM_ALGORITHM || defined __DOXYGEN__
+#define LWIP_CHKSUM_ALGORITHM           3 // 2
+#endif
 /**
  * LWIP_CHECKSUM_CTRL_PER_NETIF==1: Checksum generation/check can be enabled/disabled
  * per netif.