diff --git a/components/lwip/include/lwip/port/lwipopts.h b/components/lwip/include/lwip/port/lwipopts.h
index 9df03236..4e3877cc 100644
--- a/components/lwip/include/lwip/port/lwipopts.h
+++ b/components/lwip/include/lwip/port/lwipopts.h
@@ -37,6 +37,8 @@
 #define SOCKETS_MT
 
 //#define SOCKETS_TCP_TRACE
+
+#define LWIP_SUPPORT_CUSTOM_PBUF    1
 /*
    -----------------------------------------------
    ---------- Platform specific locking ----------
diff --git a/components/lwip/lwip/src/include/lwip/lwip/pbuf.h b/components/lwip/lwip/src/include/lwip/lwip/pbuf.h
index 7ea946dc..e41c1efa 100644
--- a/components/lwip/lwip/src/include/lwip/lwip/pbuf.h
+++ b/components/lwip/lwip/src/include/lwip/lwip/pbuf.h
@@ -40,9 +40,11 @@
 extern "C" {
 #endif
 
+#ifndef LWIP_SUPPORT_CUSTOM_PBUF
 /** Currently, the pbuf_custom code is only needed for one specific configuration
  * of IP_FRAG */
 #define LWIP_SUPPORT_CUSTOM_PBUF (IP_FRAG && !IP_FRAG_USES_STATIC_BUF && !LWIP_NETIF_TX_SINGLE_PBUF)
+#endif
 
 /* @todo: We need a mechanism to prevent wasting memory in every pbuf
    (TCP vs. UDP, IPv4 vs. IPv6: UDP/IPv4 packets may waste up to 28 bytes) */