diff --git a/ports/unix/proj/unixsim/lwipopts.h b/ports/unix/proj/unixsim/lwipopts.h
index 5ca51d9..66e2499 100644
--- a/ports/unix/proj/unixsim/lwipopts.h
+++ b/ports/unix/proj/unixsim/lwipopts.h
@@ -123,7 +123,7 @@ a lot of data that needs to be copied, this should be set high. */
 
 /* ---------- Pbuf options ---------- */
 /* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
-#define PBUF_POOL_SIZE          100
+#define PBUF_POOL_SIZE          120
 
 /* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
 #define PBUF_POOL_BUFSIZE       128