diff --git a/src/main.cpp b/src/main.cpp
index dd2f491ae..4386893ee 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3830,7 +3830,7 @@ CBlock* CreateNewBlock(CReserveKey& reservekey)
                 int64 nValueIn = coins.vout[txin.prevout.n].nValue;
                 nTotalIn += nValueIn;
 
-                int nConf = pindexPrev->nHeight - coins.nHeight;
+                int nConf = pindexPrev->nHeight - coins.nHeight + 1;
 
                 dPriority += (double)nValueIn * nConf;
             }