diff --git a/iguana/iguana_msg.c b/iguana/iguana_msg.c
index f561713ee..8986edca8 100755
--- a/iguana/iguana_msg.c
+++ b/iguana/iguana_msg.c
@@ -1021,7 +1021,7 @@ int32_t iguana_msgparser(struct supernet_info *myinfo,struct iguana_info *coin,s
                         if ( rawmem->totalsize == 0 )
                             iguana_meminit(rawmem,"bighdrs",0,IGUANA_MAXPACKETSIZE * 4,0);
                         memset(prevhash2.bytes,0,sizeof(prevhash2));
-                        zblocks = mycalloc('z',1,(int32_t)(sizeof(struct iguana_zblock) * n));
+                        zblocks = mycalloc('z',1,(int32_t)(sizeof(struct iguana_zblock) * n) + 8192);
                         //printf("%s got %d headers len.%d\n",coin->symbol,n,recvlen);
                         for (i=0; i<n; i++)
                         {