diff --git a/src/lwip/BUILD.gn b/src/lwip/BUILD.gn
index 755b3049174f7c..5183b4e99f20d7 100644
--- a/src/lwip/BUILD.gn
+++ b/src/lwip/BUILD.gn
@@ -228,7 +228,6 @@ if (current_os == "zephyr" || current_os == "mbed") {
 
       sources += [
         "${lwip_platform}/lwipopts-rs911x.h",
-        "${lwip_platform}/lwipopts-thread.h",
         "${lwip_platform}/lwipopts-wf200.h",
       ]
     } else if (lwip_platform == "standalone") {
diff --git a/src/lwip/silabs/lwipopts-thread.h b/src/lwip/silabs/lwipopts-thread.h
deleted file mode 100644
index f667e5bb3a8f27..00000000000000
--- a/src/lwip/silabs/lwipopts-thread.h
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- *
- *    Copyright (c) 2020 Project CHIP Authors
- *    Copyright (c) 2019 Nest Labs, Inc.
- *
- *    Licensed under the Apache License, Version 2.0 (the "License");
- *    you may not use this file except in compliance with the License.
- *    You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- *    Unless required by applicable law or agreed to in writing, software
- *    distributed under the License is distributed on an "AS IS" BASIS,
- *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *    See the License for the specific language governing permissions and
- *    limitations under the License.
- */
-
-/**
- *    @file
- *      Compile-time configuration for LwIP on EFR32 platforms using the
- *      Silicon Labs EFR32 SDK.
- *
- */
-
-#ifndef __LWIPOPTS_H__
-#define __LWIPOPTS_H__
-
-#if CHIP_HAVE_CONFIG_H
-#include <lwip/lwip_buildconfig.h>
-#endif
-
-#include <stdlib.h>
-
-#define NO_SYS 0
-#define MEM_ALIGNMENT (4)
-#define MEMP_NUM_TCP_SEG (TCP_SND_QUEUELEN + 1)
-#define LWIP_TIMEVAL_PRIVATE (0)
-#define MEM_LIBC_MALLOC (0)
-#define LWIP_COMPAT_MUTEX (0)
-#define SYS_LIGHTWEIGHT_PROT (1)
-#define LWIP_AUTOIP (0)
-#define LWIP_DHCP_AUTOIP_COOP (0)
-#define LWIP_SOCKET_SET_ERRNO 0
-#define IP_REASS_MAX_PBUFS 0
-#define IP_REASSEMBLY 0
-#define MEMP_NUM_REASSDATA 0
-#define LWIP_SO_RCVTIMEO 0
-#define SO_REUSE (1)
-#define LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS (1)
-#define LWIP_STATS (0)
-#define LWIP_TCPIP_CORE_LOCKING 1
-#define TCP_QUEUE_OOSEQ 0
-#define ARP_QUEUEING (0)
-#define TCPIP_THREAD_NAME "LWIP"
-
-#define LWIP_SOCKET 0
-
-#define LWIP_FREERTOS_USE_STATIC_TCPIP_TASK 1
-
-#define LWIP_RAW 1
-#define MEMP_NUM_RAW_PCB (4)
-
-#define MEMP_NUM_UDP_PCB (5)
-
-#define LWIP_HAVE_LOOPIF (0)
-
-// TODO: not sure why this is disabled
-#define LWIP_NETIF_LOOPBACK (0)
-
-#define MEMP_NUM_NETCONN (0)
-
-#define LWIP_IPV4 0
-
-#define LWIP_IPV6 1
-#define LWIP_IPV6_ROUTE_TABLE_SUPPORT 1
-#define LWIP_ARP (0)
-#define LWIP_DNS (0)
-#define LWIP_ICMP (0)
-#define LWIP_IGMP (0)
-#define LWIP_DHCP (0)
-#define LWIP_IPV6_REASS (0)
-#define LWIP_IPV6_DHCP6 0
-#define LWIP_IPV6_AUTOCONFIG (0)
-#define LWIP_IPV6_ROUTER_SUPPORT 0
-#define LWIP_ND6_LISTEN_RA 0
-
-#define LWIP_ND6_NUM_NEIGHBORS (0)
-#define LWIP_ND6_NUM_DESTINATIONS (0)
-#define LWIP_ND6_NUM_PREFIXES (0)
-#define LWIP_ND6_NUM_ROUTERS (0)
-#define LWIP_ND6_MAX_MULTICAST_SOLICIT (0)
-#define LWIP_ND6_MAX_UNICAST_SOLICIT (0)
-#define LWIP_ND6_MAX_NEIGHBOR_ADVERTISEMENT (0)
-#define LWIP_ND6_TCP_REACHABILITY_HINTS (0)
-
-#if defined(EFR32MG21)
-#define MEMP_SEPARATE_POOLS (1)
-#define LWIP_PBUF_FROM_CUSTOM_POOLS (0)
-#define MEMP_USE_CUSTOM_POOLS (0)
-#define PBUF_POOL_SIZE (5)
-#define PBUF_POOL_BUFSIZE (1280)
-#define PBUF_CUSTOM_POOL_IDX_START (MEMP_PBUF_POOL_SMALL)
-#define PBUF_CUSTOM_POOL_IDX_END (MEMP_PBUF_POOL_LARGE)
-#else
-#define MEMP_SEPARATE_POOLS (1)
-#define LWIP_PBUF_FROM_CUSTOM_POOLS (0)
-#define MEMP_USE_CUSTOM_POOLS (0)
-#define PBUF_POOL_SIZE (8)
-#define PBUF_POOL_BUFSIZE (1280)
-#define PBUF_CUSTOM_POOL_IDX_START (MEMP_PBUF_POOL_SMALL)
-#define PBUF_CUSTOM_POOL_IDX_END (MEMP_PBUF_POOL_LARGE)
-#endif
-
-#define TCP_MSS (1152)
-#define TCP_SND_BUF (2 * TCP_MSS)
-#define TCP_LISTEN_BACKLOG (1)
-
-#define ETH_PAD_SIZE (0)
-#define SUB_ETHERNET_HEADER_SPACE (0)
-#define PBUF_LINK_HLEN (0)
-
-#if defined(EFR32MG21)
-#define TCPIP_THREAD_STACKSIZE (1536)
-#else
-#define TCPIP_THREAD_STACKSIZE (2048)
-#endif
-
-#define TCPIP_THREAD_PRIO (2)
-
-#define NETIF_MAX_HWADDR_LEN 8U
-
-#define LWIP_IPV6_NUM_ADDRESSES 5
-
-#define LWIP_IPV6_ND 0
-#define LWIP_ND6_QUEUEING 0
-
-#define LWIP_MULTICAST_PING 0
-
-#define TCPIP_MBOX_SIZE 6
-#define DEFAULT_RAW_RECVMBOX_SIZE 6
-#define DEFAULT_UDP_RECVMBOX_SIZE 6
-#define DEFAULT_TCP_RECVMBOX_SIZE 6
-
-#ifdef LWIP_DEBUG
-
-#define MEMP_OVERFLOW_CHECK (0)
-#define MEMP_SANITY_CHECK (0)
-#define MEM_DEBUG (LWIP_DBG_OFF)
-#define MEMP_DEBUG (LWIP_DBG_OFF)
-#define PBUF_DEBUG (LWIP_DBG_OFF)
-#define API_LIB_DEBUG (LWIP_DBG_OFF)
-#define API_MSG_DEBUG (LWIP_DBG_OFF)
-#define TCPIP_DEBUG (LWIP_DBG_OFF)
-#define NETIF_DEBUG (LWIP_DBG_OFF)
-#define SOCKETS_DEBUG (LWIP_DBG_OFF)
-#define DEMO_DEBUG (LWIP_DBG_OFF)
-#define DHCP_DEBUG (LWIP_DBG_OFF)
-#define AUTOIP_DEBUG (LWIP_DBG_OFF)
-#define ETHARP_DEBUG (LWIP_DBG_OFF)
-#define IP_DEBUG (LWIP_DBG_OFF)
-#define IP_REASS_DEBUG (LWIP_DBG_OFF)
-#define IP6_DEBUG (LWIP_DBG_OFF)
-#define RAW_DEBUG (LWIP_DBG_OFF)
-#define ICMP_DEBUG (LWIP_DBG_OFF)
-#define UDP_DEBUG (LWIP_DBG_OFF)
-#define TCP_DEBUG (LWIP_DBG_OFF)
-#define TCP_INPUT_DEBUG (LWIP_DBG_OFF)
-#define TCP_OUTPUT_DEBUG (LWIP_DBG_OFF)
-#define TCP_RTO_DEBUG (LWIP_DBG_OFF)
-#define TCP_CWND_DEBUG (LWIP_DBG_OFF)
-#define TCP_WND_DEBUG (LWIP_DBG_OFF)
-#define TCP_FR_DEBUG (LWIP_DBG_OFF)
-#define TCP_QLEN_DEBUG (LWIP_DBG_OFF)
-#define TCP_RST_DEBUG (LWIP_DBG_OFF)
-#define PPP_DEBUG (LWIP_DBG_OFF)
-#endif
-
-#define LWIP_DBG_TYPES_ON                                                                                                          \
-    (LWIP_DBG_ON | LWIP_DBG_TRACE) /* (LWIP_DBG_ON|LWIP_DBG_TRACE|LWIP_DBG_STATE|LWIP_DBG_FRESH|LWIP_DBG_HALT) */
-
-#endif /* __LWIPOPTS_H__ */
diff --git a/src/lwip/silabs/lwipopts.h b/src/lwip/silabs/lwipopts.h
index 499e11d4700c19..722134514eb864 100644
--- a/src/lwip/silabs/lwipopts.h
+++ b/src/lwip/silabs/lwipopts.h
@@ -2,6 +2,4 @@
 #include "lwipopts-wf200.h"
 #elif defined(RS911X_WIFI)
 #include "lwipopts-rs911x.h"
-#else
-#include "lwipopts-thread.h"
 #endif
diff --git a/third_party/silabs/silabs_lwip/BUILD.gn b/third_party/silabs/silabs_lwip/BUILD.gn
index dd05ec4cf319c6..e148763a9ca70d 100644
--- a/third_party/silabs/silabs_lwip/BUILD.gn
+++ b/third_party/silabs/silabs_lwip/BUILD.gn
@@ -36,7 +36,6 @@ lwip_target("silabs_lwip") {
   sources = [
     "${chip_root}/src/lwip/freertos/sys_arch.c",
     "${chip_root}/src/lwip/silabs/lwipopts-rs911x.h",
-    "${chip_root}/src/lwip/silabs/lwipopts-thread.h",
     "${chip_root}/src/lwip/silabs/lwipopts-wf200.h",
   ]