diff --git a/src/policy/fees.cpp b/src/policy/fees.cpp
index e139b06c72a..980ecf10dfc 100644
--- a/src/policy/fees.cpp
+++ b/src/policy/fees.cpp
@@ -505,7 +505,7 @@ CFeeRate CBlockPolicyEstimator::estimateFee(int confTarget)
     return CFeeRate(median);
 }
 
-CFeeRate CBlockPolicyEstimator::estimateSmartFee(int confTarget, int *answerFoundAtTarget, const CTxMemPool *pool)
+CFeeRate CBlockPolicyEstimator::estimateSmartFee(int confTarget, int *answerFoundAtTarget, const CTxMemPool& pool)
 {
     if (answerFoundAtTarget)
         *answerFoundAtTarget = confTarget;
@@ -522,7 +522,7 @@ CFeeRate CBlockPolicyEstimator::estimateSmartFee(int confTarget, int *answerFoun
         *answerFoundAtTarget = confTarget - 1;
 
     // If mempool is limiting txs , return at least the min fee from the mempool
-    CAmount minPoolFee = pool->GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
+    CAmount minPoolFee = pool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
     if (minPoolFee > 0 && minPoolFee > median)
         return CFeeRate(minPoolFee);
 
@@ -541,7 +541,7 @@ double CBlockPolicyEstimator::estimatePriority(int confTarget)
     return priStats.EstimateMedianVal(confTarget, SUFFICIENT_PRITXS, MIN_SUCCESS_PCT, true, nBestSeenHeight);
 }
 
-double CBlockPolicyEstimator::estimateSmartPriority(int confTarget, int *answerFoundAtTarget, const CTxMemPool *pool)
+double CBlockPolicyEstimator::estimateSmartPriority(int confTarget, int *answerFoundAtTarget, const CTxMemPool& pool)
 {
     if (answerFoundAtTarget)
         *answerFoundAtTarget = confTarget;
@@ -550,7 +550,7 @@ double CBlockPolicyEstimator::estimateSmartPriority(int confTarget, int *answerF
         return -1;
 
     // If mempool is limiting txs, no priority txs are allowed
-    CAmount minPoolFee = pool->GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
+    CAmount minPoolFee = pool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
     if (minPoolFee > 0)
         return INF_PRIORITY;
 
@@ -562,7 +562,6 @@ double CBlockPolicyEstimator::estimateSmartPriority(int confTarget, int *answerF
     if (answerFoundAtTarget)
         *answerFoundAtTarget = confTarget - 1;
 
-
     return median;
 }
 
diff --git a/src/policy/fees.h b/src/policy/fees.h
index 59e6bfbc069..7a293267d42 100644
--- a/src/policy/fees.h
+++ b/src/policy/fees.h
@@ -247,7 +247,7 @@ public:
      *  confTarget blocks. If no answer can be given at confTarget, return an
      *  estimate at the lowest target where one can be given.
      */
-    CFeeRate estimateSmartFee(int confTarget, int *answerFoundAtTarget, const CTxMemPool *pool);
+    CFeeRate estimateSmartFee(int confTarget, int *answerFoundAtTarget, const CTxMemPool& pool);
 
     /** Return a priority estimate */
     double estimatePriority(int confTarget);
@@ -256,7 +256,7 @@ public:
      *  confTarget blocks. If no answer can be given at confTarget, return an
      *  estimate at the lowest target where one can be given.
      */
-    double estimateSmartPriority(int confTarget, int *answerFoundAtTarget, const CTxMemPool *pool);
+    double estimateSmartPriority(int confTarget, int *answerFoundAtTarget, const CTxMemPool& pool);
 
     /** Write estimation data to a file */
     void Write(CAutoFile& fileout);
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 58b8448bb6f..ec7971c2f1c 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -704,7 +704,7 @@ CFeeRate CTxMemPool::estimateFee(int nBlocks) const
 CFeeRate CTxMemPool::estimateSmartFee(int nBlocks, int *answerFoundAtBlocks) const
 {
     LOCK(cs);
-    return minerPolicyEstimator->estimateSmartFee(nBlocks, answerFoundAtBlocks, this);
+    return minerPolicyEstimator->estimateSmartFee(nBlocks, answerFoundAtBlocks, *this);
 }
 double CTxMemPool::estimatePriority(int nBlocks) const
 {
@@ -714,7 +714,7 @@ double CTxMemPool::estimatePriority(int nBlocks) const
 double CTxMemPool::estimateSmartPriority(int nBlocks, int *answerFoundAtBlocks) const
 {
     LOCK(cs);
-    return minerPolicyEstimator->estimateSmartPriority(nBlocks, answerFoundAtBlocks, this);
+    return minerPolicyEstimator->estimateSmartPriority(nBlocks, answerFoundAtBlocks, *this);
 }
 
 bool
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 9152a59cdf3..cd5f9042f36 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -2036,7 +2036,7 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
                     double dPriorityNeeded = mempool.estimateSmartPriority(nTxConfirmTarget);
                     // Require at least hard-coded AllowFree.
                     if (dPriority >= dPriorityNeeded && AllowFree(dPriority))
-                            break;
+                        break;
                 }
 
                 CAmount nFeeNeeded = GetMinimumFee(nBytes, nTxConfirmTarget, mempool);