diff --git a/src/policy/policy.cpp b/src/policy/policy.cpp
--- a/src/policy/policy.cpp
+++ b/src/policy/policy.cpp
@@ -14,7 +14,7 @@
 #include <utilstrencodings.h>
 #include <validation.h>
 
-Amount GetDustThreshold(const CTxOut &txout, const CFeeRate &dustRelayFee) {
+Amount GetDustThreshold(const CTxOut &txout, const CFeeRate &dustRelayFeeIn) {
     // "Dust" is defined in terms of dustRelayFee,
     // which has units satoshis-per-kilobyte.
     // If you'd pay more than 1/3 in fees
@@ -36,11 +36,11 @@
     // the 148 mentioned above
     nSize += (32 + 4 + 1 + 107 + 4);
 
-    return 3 * dustRelayFee.GetFee(nSize);
+    return 3 * dustRelayFeeIn.GetFee(nSize);
 }
 
-bool IsDust(const CTxOut &txout, const CFeeRate &dustRelayFee) {
-    return (txout.nValue < GetDustThreshold(txout, dustRelayFee));
+bool IsDust(const CTxOut &txout, const CFeeRate &dustRelayFeeIn) {
+    return (txout.nValue < GetDustThreshold(txout, dustRelayFeeIn));
 }
 
 /**