diff --git a/src/amount.cpp b/src/amount.cpp
index a3abd8cd8..aef67ed62 100644
--- a/src/amount.cpp
+++ b/src/amount.cpp
@@ -19,7 +19,7 @@ CFeeRate::CFeeRate(const CAmount& nFeePaid, size_t nSize)
 
 CAmount CFeeRate::GetFee(size_t nSize) const
 {
-    CAmount nFee = nSatoshisPerK*nSize / 1000;
+    CAmount nFee = nSatoshisPerK*(1 + nSize / 1000);
 
     if (nFee == 0 && nSatoshisPerK > 0)
         nFee = nSatoshisPerK;