diff --git a/iguana/iguana_unspents.c b/iguana/iguana_unspents.c
index ed108b753..af2a088b7 100755
--- a/iguana/iguana_unspents.c
+++ b/iguana/iguana_unspents.c
@@ -455,11 +455,12 @@ int32_t iguana_balancegen(struct iguana_info *coin,struct iguana_bundle *bp,int3
         now = (uint32_t)time(NULL);
         if ( spentbp != 0 && unspentind > 0 && unspentind < spentbp->ramchain.H.data->numunspents )
         {
-            if ( (spentbp->dirty++ % 100000) == 3 )
+            if ( (bp == spentbp && spentbp->dirty == 0) || (bp == spentbp != 0 && (spentbp->dirty % 100000) == 3) )
             {
                 printf("prefetch.[%d]\n",spentbp->hdrsi);
                 iguana_ramchain_prefetch(coin,&spentbp->ramchain);
             }
+            spentbp->dirty++;
             //if ( incremental == 0 )
             {
                 if ( spentbp->ramchain.Uextras == 0 )