diff --git a/src/include/lwip/memp_std.h b/src/include/lwip/memp_std.h
index 9cb30321..c314bf87 100644
--- a/src/include/lwip/memp_std.h
+++ b/src/include/lwip/memp_std.h
@@ -45,7 +45,7 @@ LWIP_MEMPOOL(TCP_SEG,        MEMP_NUM_TCP_SEG,         sizeof(struct tcp_seg),
 
 #if IP_REASSEMBLY
 LWIP_MEMPOOL(REASSDATA,      MEMP_NUM_REASSDATA,       sizeof(struct ip_reassdata),   "REASSDATA")
-#endif
+#endif /* IP_REASSEMBLY */
 
 #if LWIP_NETCONN
 LWIP_MEMPOOL(NETBUF,         MEMP_NUM_NETBUF,          sizeof(struct netbuf),         "NETBUF")
diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index eadd4755..05df9d90 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -211,6 +211,13 @@
 #define MEMP_NUM_TCP_SEG                16
 #endif
 
+/**
+ * MEMP_NUM_REASSDATA: ...@todo to define to a best value
+ */
+#ifndef MEMP_NUM_REASSDATA
+#define MEMP_NUM_REASSDATA              8
+#endif
+
 /**
  * MEMP_NUM_ARP_QUEUE: the number of simulateously queued outgoing
  * packets (pbufs) that are waiting for an ARP request (to resolve