diff --git a/app.go b/app.go
index adccf030cdab..e9fa79ee7b80 100644
--- a/app.go
+++ b/app.go
@@ -328,7 +328,7 @@ func NewSimApp(
 	)
 
 	app.mm.RegisterInvariants(&app.CrisisKeeper)
-	app.mm.RegisterRoutes(app.Router(), app.QueryRouter())
+	app.mm.RegisterRoutes(app.Router(), app.QueryRouter(), codec.NewAminoCodec(encodingConfig.Amino))
 	app.mm.RegisterQueryServices(app.GRPCQueryRouter())
 
 	// add test gRPC service for testing gRPC queries in isolation