diff --git a/x/wasm/simulation/proposals.go b/x/wasm/simulation/proposals.go
index b46e97d1ac..7c1582b467 100644
--- a/x/wasm/simulation/proposals.go
+++ b/x/wasm/simulation/proposals.go
@@ -374,7 +374,7 @@ func SimulateUpdateInstantiateConfigProposal(wasmKeeper WasmKeeper, codeSelector
 		return types.NewUpdateInstantiateConfigProposal(
 			simtypes.RandStringOfLength(r, 10),
 			simtypes.RandStringOfLength(r, 10),
-			[]types.AccessConfigUpdate{configUpdate},
+			configUpdate,
 		)
 	}
 }
diff --git a/x/wasm/types/proposal.go b/x/wasm/types/proposal.go
index 16eae262de..8aa49ef447 100644
--- a/x/wasm/types/proposal.go
+++ b/x/wasm/types/proposal.go
@@ -821,7 +821,7 @@ func validateProposalCommons(title, description string) error {
 func NewUpdateInstantiateConfigProposal(
 	title string,
 	description string,
-	accessConfigUpdates []AccessConfigUpdate,
+	accessConfigUpdates ...AccessConfigUpdate,
 ) *UpdateInstantiateConfigProposal {
 	return &UpdateInstantiateConfigProposal{
 		Title:               title,