diff --git a/src/policy/fees.h b/src/policy/fees.h
index 8a98e5552..059415418 100644
--- a/src/policy/fees.h
+++ b/src/policy/fees.h
@@ -204,7 +204,7 @@ public:
      *  the closest target where one can be given.  'conservative' estimates are
      *  valid over longer time horizons also.
      */
-    CFeeRate estimateSmartFee(int confTarget, FeeCalculation *feeCalc, const CTxMemPool& pool, bool conservative = true) const;
+    CFeeRate estimateSmartFee(int confTarget, FeeCalculation *feeCalc, const CTxMemPool& pool, bool conservative) const;
 
     /** Return a specific fee estimate calculation with a given success
      * threshold and time horizon, and optionally return detailed data about
diff --git a/src/test/policyestimator_tests.cpp b/src/test/policyestimator_tests.cpp
index 6bfd31564..8cdd39210 100644
--- a/src/test/policyestimator_tests.cpp
+++ b/src/test/policyestimator_tests.cpp
@@ -184,8 +184,8 @@ BOOST_AUTO_TEST_CASE(BlockPolicyEstimates)
     mpool.TrimToSize(1);
     BOOST_CHECK(mpool.GetMinFee(1).GetFeePerK() > feeV[5]);
     for (int i = 1; i < 10; i++) {
-        BOOST_CHECK(feeEst.estimateSmartFee(i, NULL, mpool).GetFeePerK() >= feeEst.estimateRawFee(i, 0.85, FeeEstimateHorizon::MED_HALFLIFE).GetFeePerK());
-        BOOST_CHECK(feeEst.estimateSmartFee(i, NULL, mpool).GetFeePerK() >= mpool.GetMinFee(1).GetFeePerK());
+        BOOST_CHECK(feeEst.estimateSmartFee(i, NULL, mpool, true).GetFeePerK() >= feeEst.estimateRawFee(i, 0.85, FeeEstimateHorizon::MED_HALFLIFE).GetFeePerK());
+        BOOST_CHECK(feeEst.estimateSmartFee(i, NULL, mpool, true).GetFeePerK() >= mpool.GetMinFee(1).GetFeePerK());
     }
 }