diff --git a/ext/lwip-contrib/ports/unix/include/arch/cc.h b/ext/lwip-contrib/ports/unix/include/arch/cc.h
index 3e77e65..9f2fc74 100644
--- a/ext/lwip-contrib/ports/unix/include/arch/cc.h
+++ b/ext/lwip-contrib/ports/unix/include/arch/cc.h
@@ -52,6 +52,8 @@
 
 #define LWIP_RAND() ((u32_t)rand())
 
+#define LWIP_NOASSERT 1
+
 /* different handling for unit test, normally not needed */
 #ifdef LWIP_NOASSERT_ON_ERROR
 #define LWIP_ERROR(message, expression, handler) do { if (!(expression)) { \
diff --git a/ext/lwip/src/core/raw.c b/ext/lwip/src/core/raw.c
index 4ee7457..6182f7b 100755
--- a/ext/lwip/src/core/raw.c
+++ b/ext/lwip/src/core/raw.c
@@ -178,8 +178,7 @@ raw_input(struct pbuf *p, struct netif *inp)
           }
         } else {
           /* sanity-check that the receive callback did not alter the pbuf */
-          LWIP_ASSERT("raw pcb recv callback altered pbuf payload pointer without eating packet",
-            p->payload == old_payload);
+  //        LWIP_ASSERT("raw pcb recv callback altered pbuf payload pointer without eating packet",p->payload == old_payload);
         }
       }
       /* no receive callback function was set for this raw PCB */