diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 404cca237..52d07bf6a 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -13,7 +13,7 @@
 using namespace std;
 
 CTxMemPoolEntry::CTxMemPoolEntry():
-    nFee(0), nTxSize(0), nTime(0), dPriority(0.0)
+    nFee(0), nTxSize(0), nModSize(0), nTime(0), dPriority(0.0)
 {
     nHeight = MEMPOOL_HEIGHT;
 }