diff --git a/src/policy/policy.cpp b/src/policy/policy.cpp
index 7b2b23964..506eb6f17 100644
--- a/src/policy/policy.cpp
+++ b/src/policy/policy.cpp
@@ -209,7 +209,7 @@ bool IsWitnessStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs)
 CFeeRate incrementalRelayFee = CFeeRate(DEFAULT_INCREMENTAL_RELAY_FEE);
 CFeeRate dustRelayFee = CFeeRate(DUST_RELAY_TX_FEE);
 unsigned int nBytesPerSigOp = DEFAULT_BYTES_PER_SIGOP;
-unsigned int nDustLimit = DEFAULT_DUST_LIMIT;
+CAmount nDustLimit = DEFAULT_DUST_LIMIT;
 
 int64_t GetVirtualTransactionSize(int64_t nWeight, int64_t nSigOpCost)
 {
diff --git a/src/policy/policy.h b/src/policy/policy.h
index 5380f7b5b..2540f373c 100644
--- a/src/policy/policy.h
+++ b/src/policy/policy.h
@@ -31,7 +31,7 @@ static const unsigned int MAX_STANDARD_TX_SIGOPS_COST = MAX_BLOCK_SIGOPS_COST/5;
 /** Default for -maxmempool, maximum megabytes of mempool memory usage */
 static const unsigned int DEFAULT_MAX_MEMPOOL_SIZE = 300;
 /** Default for -incrementalrelayfee, which sets the minimum feerate increase for mempool limiting or BIP 125 replacement **/
-static const unsigned int DEFAULT_INCREMENTAL_RELAY_FEE = 1000;
+static const CAmount DEFAULT_INCREMENTAL_RELAY_FEE = 1000;
 /** Default for -bytespersigop */
 static const unsigned int DEFAULT_BYTES_PER_SIGOP = 20;
 /** The maximum number of witness stack items in a standard P2WSH script */
@@ -45,13 +45,13 @@ static const unsigned int MAX_STANDARD_P2WSH_SCRIPT_SIZE = 3600;
  * standard and should be done with care and ideally rarely. It makes sense to
  * only increase the dust limit after prior releases were already not creating
  * outputs below the new threshold */
-static const unsigned int DUST_RELAY_TX_FEE = COIN / 100000;
+static const CAmount DUST_RELAY_TX_FEE = COIN / 100000;
 /**
  * Dogecoin: Default dust limit that is evaluated when considering whether a
  * transaction output is required to pay additional fee for relay and inclusion
  * in blocks. Overridden by -dustlimit
  */
-static const unsigned int DEFAULT_DUST_LIMIT = COIN / 1;
+static const CAmount DEFAULT_DUST_LIMIT = COIN / 1;
 
 /**
  * Standard script verification flags that standard transactions will comply
@@ -103,7 +103,7 @@ bool IsWitnessStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs)
 extern CFeeRate incrementalRelayFee;
 extern CFeeRate dustRelayFee;
 extern unsigned int nBytesPerSigOp;
-extern unsigned int nDustLimit;
+extern CAmount nDustLimit;
 
 /** Compute the virtual transaction size (weight reinterpreted as bytes). */
 int64_t GetVirtualTransactionSize(int64_t nWeight, int64_t nSigOpCost);
diff --git a/src/primitives/transaction.h b/src/primitives/transaction.h
index 0d0ceda54..63e34697a 100644
--- a/src/primitives/transaction.h
+++ b/src/primitives/transaction.h
@@ -15,7 +15,8 @@ static const int SERIALIZE_TRANSACTION_NO_WITNESS = 0x40000000;
 
 static const int WITNESS_SCALE_FACTOR = 4;
 
-extern unsigned int nDustLimit;
+/** An amount smaller than this is considered dust */
+extern CAmount nDustLimit;
 
 /** An outpoint - a combination of a transaction hash and an index n into its vout */
 class COutPoint
diff --git a/src/validation.h b/src/validation.h
index 138103803..afe5e89ac 100644
--- a/src/validation.h
+++ b/src/validation.h
@@ -54,7 +54,7 @@ static const bool DEFAULT_WHITELISTRELAY = true;
 /** Default for DEFAULT_WHITELISTFORCERELAY. */
 static const bool DEFAULT_WHITELISTFORCERELAY = true;
 /** Default for -minrelaytxfee, minimum relay fee for transactions */
-static const unsigned int DEFAULT_MIN_RELAY_TX_FEE = COIN;
+static const CAmount DEFAULT_MIN_RELAY_TX_FEE = COIN;
 //! -maxtxfee default
 static const CAmount DEFAULT_TRANSACTION_MAXFEE = 400 * COIN;
 //! Discourage users to set fees higher than this amount (in satoshis) per kB
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp
index 79a994bf6..a72e1ce09 100644
--- a/src/wallet/test/wallet_tests.cpp
+++ b/src/wallet/test/wallet_tests.cpp
@@ -36,7 +36,7 @@ std::vector<std::unique_ptr<CWalletTx>> wtxn;
 
 typedef set<pair<const CWalletTx*,unsigned int> > CoinSet;
 
-extern unsigned int nDustLimit;
+extern CAmount nDustLimit;
 
 BOOST_FIXTURE_TEST_SUITE(wallet_tests, WalletTestingSetup)
 
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index e3a041e7f..32db83f24 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -54,7 +54,7 @@ static const CAmount DEFAULT_FALLBACK_FEE = COIN;
 //! -mintxfee default
 static const CAmount DEFAULT_TRANSACTION_MINFEE = COIN;
 //mlumin 5/2021: adding a minimum Wallet fee vs relay, currently still 1 COIN, to be reduced.
-static const unsigned int DEFAULT_MIN_WALLET_TX_FEE = COIN;
+static const CAmount DEFAULT_MIN_WALLET_TX_FEE = COIN;
 //! minimum recommended increment for BIP 125 replacement txs
 static const CAmount WALLET_INCREMENTAL_RELAY_FEE = COIN/10 * 5;
 //! target minimum change amount