diff --git a/lib/mempool/mempool.js b/lib/mempool/mempool.js
index 9496af71..a359d566 100644
--- a/lib/mempool/mempool.js
+++ b/lib/mempool/mempool.js
@@ -1717,7 +1717,7 @@ Mempool.prototype.memUsage = function memUsage(tx) {
   var mem = 0;
   var i, j, input, output, coin, op;
 
-  mem += 264; // tx (note: probably more now due to hhash pointer)
+  mem += 272; // tx
   mem += 80; // _hash
   mem += 88; // _hhash
   mem += 80; // _raw
@@ -1785,7 +1785,7 @@ Mempool.prototype.memUsage = function memUsage(tx) {
     }
   }
 
-  mem += 176; // mempool entry
+  mem += 152; // mempool entry
 
   return mem;
 };