diff --git a/app.go b/app.go
index 9e977e994f85..71104982fbb9 100644
--- a/app.go
+++ b/app.go
@@ -280,6 +280,7 @@ func NewSimApp(
 	// During begin block slashing happens after distr.BeginBlocker so that
 	// there is nothing left over in the validator fee pool, so as to keep the
 	// CanWithdrawInvariant invariant.
+	// NOTE: staking module is required if HistoricalEntries param > 0
 	app.mm.SetOrderBeginBlockers(
 		upgrade.ModuleName, mint.ModuleName, distr.ModuleName, slashing.ModuleName,
 		evidence.ModuleName, staking.ModuleName, ibc.ModuleName,