diff --git a/simapp/app.go b/simapp/app.go
index 13db5d04354d..35ce2e5bac23 100644
--- a/simapp/app.go
+++ b/simapp/app.go
@@ -209,6 +209,10 @@ func NewSimApp(
 	legacyAmino := codec.NewLegacyAmino()
 	txConfig := tx.NewTxConfig(appCodec, tx.DefaultSignModes)
 
+	if err := txConfig.SigningContext().Validate(); err != nil {
+		panic(err)
+	}
+
 	std.RegisterLegacyAminoCodec(legacyAmino)
 	std.RegisterInterfaces(interfaceRegistry)