diff --git a/lib/explorer.js b/lib/explorer.js
index 5024c88..5720993 100644
--- a/lib/explorer.js
+++ b/lib/explorer.js
@@ -333,9 +333,11 @@ module.exports = {
         } else {
           module.exports.convert_to_satoshi(parseFloat(vanon.vpub_new), function(amount_sat){
             if (vhidden.length > 0 && (!vout || vout.length == 0) && (!vin || vin.length == 0)) {
-              // add a private out address for the special case where hidden sender is sending to hidden recipient
-              arr_vout.push({addresses:"private_tx", amount:amount_sat});
+              // hidden sender is sending to hidden recipient
+              // the sent and received values are not known in this case. only the fee paid is known and subtracted from the sender.
+              arr_vout.push({addresses:"private_tx", amount:0});
             }
+            // add a private send address with the known amount sent
             arr_vin.push({addresses:"private_tx", amount:amount_sat});
           });
         }