diff --git a/iguana/iguana777.c b/iguana/iguana777.c
index ea62d9740..b470f61f9 100755
--- a/iguana/iguana777.c
+++ b/iguana/iguana777.c
@@ -1090,7 +1090,7 @@ struct iguana_info *iguana_setcoin(char *symbol,void *launched,int32_t maxpeers,
     if ( coin->MAXMEM == 0 )
         coin->MAXMEM = IGUANA_DEFAULTRAM;
     coin->MAXMEM *= (1024L * 1024 * 1024);
-    coin->enableCACHE = (strcmp("BTCD",coin->symbol) == 0);
+    coin->enableCACHE = (strcmp("BTC",coin->symbol) != 0);
     if ( jobj(json,"cache") != 0 )
         coin->enableCACHE = juint(json,"cache");
     if ( (coin->polltimeout= juint(json,"poll")) <= 0 )
diff --git a/iguana/iguana_msg.c b/iguana/iguana_msg.c
index ba6c641e4..741ac700e 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 * 2,0);
                         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 * 2));
                         //printf("%s got %d headers len.%d\n",coin->symbol,n,recvlen);
                         for (i=0; i<n; i++)
                         {