diff --git a/app_legacy.go b/app_legacy.go
index f3b8c85f3dd7..36940f250abe 100644
--- a/app_legacy.go
+++ b/app_legacy.go
@@ -18,6 +18,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/baseapp"
 	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/client/flags"
+	nodeservice "github.com/cosmos/cosmos-sdk/client/grpc/node"
 	"github.com/cosmos/cosmos-sdk/client/grpc/tmservice"
 	"github.com/cosmos/cosmos-sdk/codec"
 	"github.com/cosmos/cosmos-sdk/codec/types"
@@ -465,6 +466,7 @@ func NewSimApp(
 	app.SetBeginBlocker(app.BeginBlocker)
 	app.SetEndBlocker(app.EndBlocker)
 	app.setAnteHandler(encodingConfig.TxConfig)
+
 	// In v0.46, the SDK introduces _postHandlers_. PostHandlers are like
 	// antehandlers, but are run _after_ the `runMsgs` execution. They are also
 	// defined as a chain, and have the same signature as antehandlers.
@@ -621,9 +623,13 @@ func (app *SimApp) RegisterAPIRoutes(apiSvr *api.Server, apiConfig config.APICon
 	clientCtx := apiSvr.ClientCtx
 	// Register new tx routes from grpc-gateway.
 	authtx.RegisterGRPCGatewayRoutes(clientCtx, apiSvr.GRPCGatewayRouter)
+
 	// Register new tendermint queries routes from grpc-gateway.
 	tmservice.RegisterGRPCGatewayRoutes(clientCtx, apiSvr.GRPCGatewayRouter)
 
+	// Register node gRPC service for grpc-gateway.
+	nodeservice.RegisterGRPCGatewayRoutes(clientCtx, apiSvr.GRPCGatewayRouter)
+
 	// Register grpc-gateway routes for all modules.
 	ModuleBasics.RegisterGRPCGatewayRoutes(clientCtx, apiSvr.GRPCGatewayRouter)
 
@@ -648,6 +654,10 @@ func (app *SimApp) RegisterTendermintService(clientCtx client.Context) {
 	)
 }
 
+func (app *SimApp) RegisterNodeService(clientCtx client.Context) {
+	nodeservice.RegisterNodeService(clientCtx, app.GRPCQueryRouter())
+}
+
 // GetMaccPerms returns a copy of the module account permissions
 //
 // NOTE: This is solely to be used for testing purposes.