diff --git a/lwip/src/include/lwipopts.h b/lwip/src/include/lwipopts.h
index ba930f83..312de851 100644
--- a/lwip/src/include/lwipopts.h
+++ b/lwip/src/include/lwipopts.h
@@ -99,7 +99,5 @@
 #define NETIF_DEBUG		LWIP_DBG_OFF
 #define TIMERS_DEBUG		LWIP_DBG_OFF
 
-#define LWIP_TCPIP_CORE_LOCKING_INPUT 1
-#define LWIP_TCPIP_CORE_LOCKING 1
 
 #endif