diff --git a/crypto777/iguana_OS.c b/crypto777/iguana_OS.c
index f88bfa286..ba0888b55 100755
--- a/crypto777/iguana_OS.c
+++ b/crypto777/iguana_OS.c
@@ -117,7 +117,7 @@ void *mycalloc(uint8_t type,int32_t n,long itemsize)
     //portable_mutex_unlock(&MEMmutex);
     return((void *)((long)item + sizeof(*item)));
 #else
-    return(calloc(1,n*itemsize + 64));
+    return(calloc(n,itemsize));
 #endif
 }
 
diff --git a/iguana/iguana_recv.c b/iguana/iguana_recv.c
index d358dcc34..f23cb773c 100755
--- a/iguana/iguana_recv.c
+++ b/iguana/iguana_recv.c
@@ -25,7 +25,7 @@ struct iguana_bundlereq *iguana_bundlereq(struct iguana_info *coin,struct iguana
     struct iguana_bundlereq *req; int32_t allocsize;
     if ( data == 0 )
         datalen = 0;
-    allocsize = (uint32_t)sizeof(*req) + datalen;
+    allocsize = (uint32_t)sizeof(*req) + datalen + 64;
     req = mycalloc(type,1,allocsize);
     req->allocsize = allocsize;
     req->datalen = datalen;