diff --git a/demos/STM32/RT-STM32F746G-DISCOVERY-LWIP-FATFS-USB/cfg/lwipopts.h b/demos/STM32/RT-STM32F746G-DISCOVERY-LWIP-FATFS-USB/cfg/lwipopts.h
index a91a271aa..e23a1f6f0 100644
--- a/demos/STM32/RT-STM32F746G-DISCOVERY-LWIP-FATFS-USB/cfg/lwipopts.h
+++ b/demos/STM32/RT-STM32F746G-DISCOVERY-LWIP-FATFS-USB/cfg/lwipopts.h
@@ -37,6 +37,6 @@
 
 /* Optional, application-specific settings.*/
 #define TCPIP_MBOX_SIZE                 MEMP_NUM_PBUF
-#define SLIPIF_THREAD_STACKSIZE         1024
+#define TCPIP_THREAD_STACKSIZE          1024
 
 #endif /* LWIP_HDR_LWIPOPTS_H__ */
diff --git a/os/various/lwip_bindings/static_lwipopts.h b/os/various/lwip_bindings/static_lwipopts.h
index b5e4b44d1..3f3e9b3da 100644
--- a/os/various/lwip_bindings/static_lwipopts.h
+++ b/os/various/lwip_bindings/static_lwipopts.h
@@ -29,7 +29,9 @@
 #define LWIP_TIMERS                     1
 #define LWIP_TIMERS_CUSTOM              0
 
-#define LWIP_TCPIP_CORE_LOCKING         0
+#define LWIP_TCPIP_CORE_LOCKING         1
+#define LWIP_TCPIP_CORE_LOCKING_INPUT   0
+#define LWIP_COMPAT_MUTEX_ALLOWED
 
 #define SYS_LIGHTWEIGHT_PROT            0