diff --git a/docs/architecture/adr-045-check-delivertx-middlewares.md b/docs/architecture/adr-045-check-delivertx-middlewares.md
index bb108d401ea4..dfb03d705ebe 100644
--- a/docs/architecture/adr-045-check-delivertx-middlewares.md
+++ b/docs/architecture/adr-045-check-delivertx-middlewares.md
@@ -4,6 +4,7 @@
 
 * 20.08.2021: Initial draft.
 * 07.12.2021: Update `tx.Handler` interface ([\#10693](https://github.com/cosmos/cosmos-sdk/pull/10693)).
+* 22.03.2022: Update code snippets.
 
 ## Status
 
diff --git a/simapp/app.go b/simapp/app.go
index c4cd700401d7..8e9b94075df8 100644
--- a/simapp/app.go
+++ b/simapp/app.go
@@ -471,7 +471,6 @@ func (app *SimApp) setTxHandler(txConfig client.TxConfig, indexEventsStr []strin
 		SignModeHandler:  txConfig.SignModeHandler(),
 		SigGasConsumer:   authmiddleware.DefaultSigVerificationGasConsumer,
 		TxDecoder:        txConfig.TxDecoder(),
-		FeeMarket:        authmiddleware.ValidatorTxFee{},
 	})
 	if err != nil {
 		panic(err)
diff --git a/x/auth/middleware/middleware.go b/x/auth/middleware/middleware.go
index 46374c11e93d..54de03760070 100644
--- a/x/auth/middleware/middleware.go
+++ b/x/auth/middleware/middleware.go
@@ -75,6 +75,11 @@ func NewDefaultTxHandler(options TxHandlerOptions) (tx.Handler, error) {
 		sigGasConsumer = DefaultSigVerificationGasConsumer
 	}
 
+	var feeMarket = options.FeeMarket
+	if feeMarket == nil {
+		feeMarket = ValidatorTxFee{}
+	}
+
 	return ComposeMiddlewares(
 		NewRunMsgsTxHandler(options.MsgServiceRouter, options.LegacyRouter),
 		NewTxDecoderMiddleware(options.TxDecoder),
@@ -94,7 +99,7 @@ func NewDefaultTxHandler(options TxHandlerOptions) (tx.Handler, error) {
 		// tx.
 		RejectExtensionOptionsMiddleware,
 		// Reject auth_info extension options that don't pass the criteria.
-		NewAuthExtensionOptionsMiddleware(options.FeeMarket.AllowAuthExtensionOption),
+		NewAuthExtensionOptionsMiddleware(feeMarket.AllowAuthExtensionOption),
 		ValidateBasicMiddleware,
 		TxTimeoutHeightMiddleware,
 		ValidateMemoMiddleware(options.AccountKeeper),
@@ -103,7 +108,7 @@ func NewDefaultTxHandler(options TxHandlerOptions) (tx.Handler, error) {
 		// ComposeMiddlewares godoc for details.
 		// `DeductFeeMiddleware` and `IncrementSequenceMiddleware` should be put outside of `WithBranchedStore` middleware,
 		// so their storage writes are not discarded when tx fails.
-		DeductFeeMiddleware(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, options.FeeMarket),
+		DeductFeeMiddleware(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, feeMarket),
 		SetPubKeyMiddleware(options.AccountKeeper),
 		ValidateSigCountMiddleware(options.AccountKeeper),
 		SigGasConsumeMiddleware(options.AccountKeeper, sigGasConsumer),
diff --git a/x/auth/middleware/middleware_test.go b/x/auth/middleware/middleware_test.go
index 058b44ea890a..d923b84b2c3d 100644
--- a/x/auth/middleware/middleware_test.go
+++ b/x/auth/middleware/middleware_test.go
@@ -1026,7 +1026,6 @@ func (s *MWTestSuite) TestCustomSignatureVerificationGasConsumer() {
 				}
 			},
 			TxDecoder: s.clientCtx.TxConfig.TxDecoder(),
-			FeeMarket: middleware.ValidatorTxFee{},
 		},
 	)
 	s.Require().NoError(err)
diff --git a/x/auth/middleware/testutil_test.go b/x/auth/middleware/testutil_test.go
index 78d49fd9dbd7..f493a463fa2a 100644
--- a/x/auth/middleware/testutil_test.go
+++ b/x/auth/middleware/testutil_test.go
@@ -90,7 +90,6 @@ func (s *MWTestSuite) SetupTest(isCheckTx bool) sdk.Context {
 		SignModeHandler:  encodingConfig.TxConfig.SignModeHandler(),
 		SigGasConsumer:   middleware.DefaultSigVerificationGasConsumer,
 		TxDecoder:        s.clientCtx.TxConfig.TxDecoder(),
-		FeeMarket:        middleware.ValidatorTxFee{},
 	})
 	s.Require().NoError(err)
 	s.txHandler = txHandler